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157000849 = 413829289
BaseRepresentation
bin10010101101110…
…10010010010001
3101221102110200021
421112322102101
5310143011344
623325023441
73614325265
oct1126722221
9357373607
10157000849
1180694075
12446b4b81
13266b0615
1416bcc0a5
15dbb3b84
hex95ba491

157000849 has 4 divisors (see below), whose sum is σ = 160830180. Its totient is φ = 153171520.

The previous prime is 157000847. The next prime is 157000859. The reversal of 157000849 is 948000751.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 948000751 = 1642157731.

It can be written as a sum of positive squares in 2 ways, for example, as 22278400 + 134722449 = 4720^2 + 11607^2 .

It is a cyclic number.

It is not a de Polignac number, because 157000849 - 21 = 157000847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157000841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1914604 + ... + 1914685.

It is an arithmetic number, because the mean of its divisors is an integer number (40207545).

Almost surely, 2157000849 is an apocalyptic number.

It is an amenable number.

157000849 is a deficient number, since it is larger than the sum of its proper divisors (3829331).

157000849 is an equidigital number, since it uses as much as digits as its factorization.

157000849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3829330.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 157000849 is about 12529.9979648841. The cubic root of 157000849 is about 539.4700436280.

The spelling of 157000849 in words is "one hundred fifty-seven million, eight hundred forty-nine", and thus it is an aban number.

Divisors: 1 41 3829289 157000849