147918457 has 4 divisors (see below), whose sum is σ = 147955536. Its totient is φ = 147881380.

The previous prime is 147918443. The next prime is 147918461. The reversal of 147918457 is 754819741.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147918457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147918427) 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, 11719 + ... + 20812.

It is an arithmetic number, because the mean of its divisors is an integer number (36988884).

Almost surely, 2^147918457 is an apocalyptic number.

It is an amenable number.

147918457 is a deficient number, since it is larger than the sum of its proper divisors (37079).

147918457 is an equidigital number, since it uses as much as digits as its factorization.

147918457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37078.

The product of its digits is 282240, while the sum is 46.

The square root of 147918457 is about 12162.1732021872. The cubic root of 147918457 is about 528.8600835649.

The spelling of 147918457 in words is "one hundred forty-seven million, nine hundred eighteen thousand, four hundred fifty-seven".