137981492 has 12 divisors (see below), whose sum is σ = 263419296. Its totient is φ = 62718840.

The previous prime is 137981489. The next prime is 137981497. The reversal of 137981492 is 294189731.

137981492 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 3135943 = 137981492 / (1 + 3 + 7 + 9 + 8 + 1 + 4 + 9 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137981497) 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 3 ways as a sum of consecutive naturals, for example, 1567928 + ... + 1568015.

It is an arithmetic number, because the mean of its divisors is an integer number (21951608).

Almost surely, 2^137981492 is an apocalyptic number.

It is an amenable number.

137981492 is a deficient number, since it is larger than the sum of its proper divisors (125437804).

137981492 is a wasteful number, since it uses less digits than its factorization.

137981492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3135958 (or 3135956 counting only the distinct ones).

The product of its digits is 108864, while the sum is 44.

The square root of 137981492 is about 11746.5523452628. The cubic root of 137981492 is about 516.7418220652.

The spelling of 137981492 in words is "one hundred thirty-seven million, nine hundred eighty-one thousand, four hundred ninety-two".