156397858 has 16 divisors (see below), whose sum is σ = 253684224. Its totient is φ = 72032320.

The previous prime is 156397847. The next prime is 156397897. The reversal of 156397858 is 858793651.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 47338 + ... + 50533.

It is an arithmetic number, because the mean of its divisors is an integer number (15855264).

Almost surely, 2^156397858 is an apocalyptic number.

156397858 is a deficient number, since it is larger than the sum of its proper divisors (97286366).

156397858 is a wasteful number, since it uses less digits than its factorization.

156397858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97937.

The product of its digits is 1814400, while the sum is 52.

The square root of 156397858 is about 12505.9129214944. The cubic root of 156397858 is about 538.7785124955.

The spelling of 156397858 in words is "one hundred fifty-six million, three hundred ninety-seven thousand, eight hundred fifty-eight".