157863390 has 32 divisors (see below), whose sum is σ = 384531840. Its totient is φ = 41468064.

The previous prime is 157863379. The next prime is 157863401. The reversal of 157863390 is 93368751.

It is an interprime number because it is at equal distance from previous prime (157863379) and next prime (157863401).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37260 + ... + 41279.

It is an arithmetic number, because the mean of its divisors is an integer number (12016620).

Almost surely, 2^157863390 is an apocalyptic number.

157863390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157863390 is an abundant number, since it is smaller than the sum of its proper divisors (226668450).

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

157863390 is a wasteful number, since it uses less digits than its factorization.

157863390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78616.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 157863390 is about 12564.3698608406. The cubic root of 157863390 is about 540.4561646153.

The spelling of 157863390 in words is "one hundred fifty-seven million, eight hundred sixty-three thousand, three hundred ninety".