137318563 has 2 divisors, whose sum is σ = 137318564. Its totient is φ = 137318562.

The previous prime is 137318551. The next prime is 137318569. The reversal of 137318563 is 365813731.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137318563 is a prime.

It is equal to p_7769152 and since 137318563 and 7769152 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (137318569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68659281 + 68659282.

It is an arithmetic number, because the mean of its divisors is an integer number (68659282).

Almost surely, 2^137318563 is an apocalyptic number.

137318563 is a deficient number, since it is larger than the sum of its proper divisors (1).

137318563 is an equidigital number, since it uses as much as digits as its factorization.

137318563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 37.

The square root of 137318563 is about 11718.3003460399. The cubic root of 137318563 is about 515.9129350028.

The spelling of 137318563 in words is "one hundred thirty-seven million, three hundred eighteen thousand, five hundred sixty-three".