157649946 has 16 divisors (see below), whose sum is σ = 318362304. Its totient is φ = 52039584.

The previous prime is 157649941. The next prime is 157649953. The reversal of 157649946 is 649946751.

It is not an unprimeable number, because it can be changed into a prime (157649941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126931 + ... + 128166.

It is an arithmetic number, because the mean of its divisors is an integer number (19897644).

Almost surely, 2^157649946 is an apocalyptic number.

157649946 is an abundant number, since it is smaller than the sum of its proper divisors (160712358).

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

157649946 is a wasteful number, since it uses less digits than its factorization.

157649946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255205.

The product of its digits is 1632960, while the sum is 51.

The square root of 157649946 is about 12555.8729684558. The cubic root of 157649946 is about 540.2124746853.

The spelling of 157649946 in words is "one hundred fifty-seven million, six hundred forty-nine thousand, nine hundred forty-six".