1151542849 has 4 divisors (see below), whose sum is σ = 1151704260. Its totient is φ = 1151381440.

The previous prime is 1151542837. The next prime is 1151542853. The reversal of 1151542849 is 9482451511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 555450624 + 596092225 = 23568^2 + 24415^2 .

It is a cyclic number.

It is not a de Polignac number, because 1151542849 - 2²³ = 1143154241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151542649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69484 + ... + 84445.

It is an arithmetic number, because the mean of its divisors is an integer number (287926065).

Almost surely, 2^1151542849 is an apocalyptic number.

It is an amenable number.

1151542849 is a deficient number, since it is larger than the sum of its proper divisors (161411).

1151542849 is an equidigital number, since it uses as much as digits as its factorization.

1151542849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161410.

The product of its digits is 57600, while the sum is 40.

The square root of 1151542849 is about 33934.3903584549. The cubic root of 1151542849 is about 1048.1578733013.

The spelling of 1151542849 in words is "one billion, one hundred fifty-one million, five hundred forty-two thousand, eight hundred forty-nine".