137653631 has 2 divisors, whose sum is σ = 137653632. Its totient is φ = 137653630.

The previous prime is 137653619. The next prime is 137653669. The reversal of 137653631 is 136356731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137653631 - 2⁶ = 137653567 is a prime.

It is a super-2 number, since 2×137653631² = 37897044254968322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 137653591 and 137653600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137653601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68826815 + 68826816.

It is an arithmetic number, because the mean of its divisors is an integer number (68826816).

Almost surely, 2^137653631 is an apocalyptic number.

137653631 is a deficient number, since it is larger than the sum of its proper divisors (1).

137653631 is an equidigital number, since it uses as much as digits as its factorization.

137653631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34020, while the sum is 35.

The square root of 137653631 is about 11732.5884185886. The cubic root of 137653631 is about 516.3322167559.

The spelling of 137653631 in words is "one hundred thirty-seven million, six hundred fifty-three thousand, six hundred thirty-one".