137883881 has 4 divisors (see below), whose sum is σ = 137970564. Its totient is φ = 137797200.

The previous prime is 137883871. The next prime is 137883901. The reversal of 137883881 is 188388731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 188388731 = 2141 ⋅87991.

It can be written as a sum of positive squares in 2 ways, for example, as 121000000 + 16883881 = 11000^2 + 4109^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137883881 is a prime.

It is a super-2 number, since 2×137883881² = 38023929279244322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137883871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40910 + ... + 44151.

It is an arithmetic number, because the mean of its divisors is an integer number (34492641).

Almost surely, 2^137883881 is an apocalyptic number.

It is an amenable number.

137883881 is a deficient number, since it is larger than the sum of its proper divisors (86683).

137883881 is an equidigital number, since it uses as much as digits as its factorization.

137883881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86682.

The product of its digits is 258048, while the sum is 47.

The square root of 137883881 is about 11742.3967315025. The cubic root of 137883881 is about 516.6199419880.

The spelling of 137883881 in words is "one hundred thirty-seven million, eight hundred eighty-three thousand, eight hundred eighty-one".