157933489 has 16 divisors (see below), whose sum is σ = 185107968. Its totient is φ = 131936832.

The previous prime is 157933483. The next prime is 157933493. The reversal of 157933489 is 984339751.

It is a cyclic number.

It is not a de Polignac number, because 157933489 - 2¹¹ = 157931441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157933483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90267 + ... + 91999.

It is an arithmetic number, because the mean of its divisors is an integer number (11569248).

Almost surely, 2^157933489 is an apocalyptic number.

It is an amenable number.

157933489 is a deficient number, since it is larger than the sum of its proper divisors (27174479).

157933489 is a wasteful number, since it uses less digits than its factorization.

157933489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2064.

The product of its digits is 816480, while the sum is 49.

The square root of 157933489 is about 12567.1591459645. The cubic root of 157933489 is about 540.5361490255.

The spelling of 157933489 in words is "one hundred fifty-seven million, nine hundred thirty-three thousand, four hundred eighty-nine".