156499138 has 8 divisors (see below), whose sum is σ = 242843580. Its totient is φ = 75551280.

The previous prime is 156499111. The next prime is 156499141. The reversal of 156499138 is 831994651.

It can be written as a sum of positive squares in 2 ways, for example, as 150724729 + 5774409 = 12277^2 + 2403^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1349073 + ... + 1349188.

Almost surely, 2^156499138 is an apocalyptic number.

156499138 is a deficient number, since it is larger than the sum of its proper divisors (86344442).

156499138 is a wasteful number, since it uses less digits than its factorization.

156499138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2698292.

The product of its digits is 233280, while the sum is 46.

The square root of 156499138 is about 12509.9615507003. The cubic root of 156499138 is about 538.8947879863.

The spelling of 156499138 in words is "one hundred fifty-six million, four hundred ninety-nine thousand, one hundred thirty-eight".