151939881 has 12 divisors (see below), whose sum is σ = 227597552. Its totient is φ = 101293092.

The previous prime is 151939873. The next prime is 151939889. The reversal of 151939881 is 188939151.

It is an interprime number because it is at equal distance from previous prime (151939873) and next prime (151939889).

It is not a de Polignac number, because 151939881 - 2³ = 151939873 is a prime.

It is a super-2 number, since 2×151939881² = 46171454876588322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151939889) 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 11 ways as a sum of consecutive naturals, for example, 312391 + ... + 312876.

Almost surely, 2^151939881 is an apocalyptic number.

It is an amenable number.

151939881 is a deficient number, since it is larger than the sum of its proper divisors (75657671).

151939881 is an frugal number, since it uses more digits than its factorization.

151939881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625282 (or 625270 counting only the distinct ones).

The product of its digits is 77760, while the sum is 45.

The square root of 151939881 is about 12326.3896174022. The cubic root of 151939881 is about 533.6099600982.

The spelling of 151939881 in words is "one hundred fifty-one million, nine hundred thirty-nine thousand, eight hundred eighty-one".