151964138 has 4 divisors (see below), whose sum is σ = 227946210. Its totient is φ = 75982068.

The previous prime is 151964129. The next prime is 151964149. The reversal of 151964138 is 831469151.

151964138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 831469151 = 47 ⋅17690833.

It can be written as a sum of positive squares in only one way, i.e., 139169209 + 12794929 = 11797^2 + 3577^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37991033 + ... + 37991036.

Almost surely, 2^151964138 is an apocalyptic number.

151964138 is a deficient number, since it is larger than the sum of its proper divisors (75982072).

151964138 is an equidigital number, since it uses as much as digits as its factorization.

151964138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75982071.

The product of its digits is 25920, while the sum is 38.

The square root of 151964138 is about 12327.3735239912. The cubic root of 151964138 is about 533.6383552941.

The spelling of 151964138 in words is "one hundred fifty-one million, nine hundred sixty-four thousand, one hundred thirty-eight".