151661900 has 36 divisors (see below), whose sum is σ = 354425232. Its totient is φ = 55997760.

The previous prime is 151661899. The next prime is 151661929. The reversal of 151661900 is 9166151.

It is a super-2 number, since 2×151661900² = 46002663823220000, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 57032 + ... + 59631.

Almost surely, 2^151661900 is an apocalyptic number.

151661900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

151661900 is an abundant number, since it is smaller than the sum of its proper divisors (202763332).

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

151661900 is a wasteful number, since it uses less digits than its factorization.

151661900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116690 (or 116683 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 151661900 is about 12315.1086069105. The cubic root of 151661900 is about 533.2843401176.

The spelling of 151661900 in words is "one hundred fifty-one million, six hundred sixty-one thousand, nine hundred".