137966481 has 6 divisors (see below), whose sum is σ = 199284930. Its totient is φ = 91977648.

The previous prime is 137966471. The next prime is 137966497. The reversal of 137966481 is 184669731.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 87329025 + 50637456 = 9345^2 + 7116^2 .

It is not a de Polignac number, because 137966481 - 2⁹ = 137965969 is a prime.

It is a super-2 number, since 2×137966481² = 38069499759046722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (137966471) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7664796 + ... + 7664813.

It is an arithmetic number, because the mean of its divisors is an integer number (33214155).

Almost surely, 2^137966481 is an apocalyptic number.

It is an amenable number.

137966481 is a deficient number, since it is larger than the sum of its proper divisors (61318449).

137966481 is a wasteful number, since it uses less digits than its factorization.

137966481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15329615 (or 15329612 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 137966481 is about 11745.9133744465. The cubic root of 137966481 is about 516.7230826129.

The spelling of 137966481 in words is "one hundred thirty-seven million, nine hundred sixty-six thousand, four hundred eighty-one".