151831982 has 4 divisors (see below), whose sum is σ = 227747976. Its totient is φ = 75915990.

The previous prime is 151831969. The next prime is 151831997. The reversal of 151831982 is 289138151.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 37957994 + ... + 37957997.

It is an arithmetic number, because the mean of its divisors is an integer number (56936994).

Almost surely, 2^151831982 is an apocalyptic number.

151831982 is a deficient number, since it is larger than the sum of its proper divisors (75915994).

151831982 is an equidigital number, since it uses as much as digits as its factorization.

151831982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75915993.

The product of its digits is 17280, while the sum is 38.

The square root of 151831982 is about 12322.0120921869. The cubic root of 151831982 is about 533.4836171106.

The spelling of 151831982 in words is "one hundred fifty-one million, eight hundred thirty-one thousand, nine hundred eighty-two".