151851987 has 24 divisors (see below), whose sum is σ = 256794720. Its totient is φ = 84654720.

The previous prime is 151851979. The next prime is 151851989. The reversal of 151851987 is 789158151.

151851987 is a `hidden beast` number, since 1 + 51 + 8 + 519 + 87 = 666.

It is not a de Polignac number, because 151851987 - 2³ = 151851979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (151851989) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 26812 + ... + 31977.

It is an arithmetic number, because the mean of its divisors is an integer number (10699780).

Almost surely, 2^151851987 is an apocalyptic number.

151851987 is a deficient number, since it is larger than the sum of its proper divisors (104942733).

151851987 is a wasteful number, since it uses less digits than its factorization.

151851987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58843 (or 58840 counting only the distinct ones).

The product of its digits is 100800, while the sum is 45.

The square root of 151851987 is about 12322.8238241078. The cubic root of 151851987 is about 533.5070462347.

The spelling of 151851987 in words is "one hundred fifty-one million, eight hundred fifty-one thousand, nine hundred eighty-seven".