157999002 has 32 divisors (see below), whose sum is σ = 372793344. Its totient is φ = 43686000.

The previous prime is 157998979. The next prime is 157999021. The reversal of 157999002 is 200999751.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

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, 59374 + ... + 61977.

It is an arithmetic number, because the mean of its divisors is an integer number (11649792).

Almost surely, 2^157999002 is an apocalyptic number.

157999002 is an abundant number, since it is smaller than the sum of its proper divisors (214794342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157999002 is a wasteful number, since it uses less digits than its factorization.

157999002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121394.

The product of its (nonzero) digits is 51030, while the sum is 42.

The square root of 157999002 is about 12569.7653916054. The cubic root of 157999002 is about 540.6108793220.

The spelling of 157999002 in words is "one hundred fifty-seven million, nine hundred ninety-nine thousand, two".