157953990 has 32 divisors (see below), whose sum is σ = 391320576. Its totient is φ = 40762080.

The previous prime is 157953989. The next prime is 157953997. The reversal of 157953990 is 99359751.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157953997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83992 + ... + 85851.

It is an arithmetic number, because the mean of its divisors is an integer number (12228768).

Almost surely, 2^157953990 is an apocalyptic number.

157953990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157953990 is an abundant number, since it is smaller than the sum of its proper divisors (233366586).

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

157953990 is a wasteful number, since it uses less digits than its factorization.

157953990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169884.

The product of its (nonzero) digits is 382725, while the sum is 48.

The square root of 157953990 is about 12567.9747771867. The cubic root of 157953990 is about 540.5595366178.

The spelling of 157953990 in words is "one hundred fifty-seven million, nine hundred fifty-three thousand, nine hundred ninety".