157949490 has 32 divisors (see below), whose sum is σ = 385508160. Its totient is φ = 41405504.

The previous prime is 157949483. The next prime is 157949513. The reversal of 157949490 is 94949751.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42849 + ... + 46388.

It is an arithmetic number, because the mean of its divisors is an integer number (12047130).

Almost surely, 2^157949490 is an apocalyptic number.

157949490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157949490 is an abundant number, since it is smaller than the sum of its proper divisors (227558670).

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

157949490 is a wasteful number, since it uses less digits than its factorization.

157949490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89306.

The product of its (nonzero) digits is 408240, while the sum is 48.

The square root of 157949490 is about 12567.7957494542. The cubic root of 157949490 is about 540.5544031798.

The spelling of 157949490 in words is "one hundred fifty-seven million, nine hundred forty-nine thousand, four hundred ninety".