137999999949 has 16 divisors (see below), whose sum is σ = 210291056640. Its totient is φ = 78855139440.

The previous prime is 137999999927. The next prime is 137999999957. The reversal of 137999999949 is 949999999731.

It is not a de Polignac number, because 137999999949 - 2⁸ = 137999999693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137999999909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1283044 + ... + 1386434.

It is an arithmetic number, because the mean of its divisors is an integer number (13143191040).

Almost surely, 2^137999999949 is an apocalyptic number.

It is an amenable number.

137999999949 is a deficient number, since it is larger than the sum of its proper divisors (72291056691).

137999999949 is a wasteful number, since it uses less digits than its factorization.

137999999949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166960.

The product of its digits is 3615924564, while the sum is 87.

The spelling of 137999999949 in words is "one hundred thirty-seven billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred forty-nine".