137816969 has 2 divisors, whose sum is σ = 137816970. Its totient is φ = 137816968.

The previous prime is 137816953. The next prime is 137816993. The reversal of 137816969 is 969618731.

137816969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94322944 + 43494025 = 9712^2 + 6595^2 .

It is a cyclic number.

It is not a de Polignac number, because 137816969 - 2⁴ = 137816953 is a prime.

It is a super-2 number, since 2×137816969² = 37987033888693922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (137816999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68908484 + 68908485.

It is an arithmetic number, because the mean of its divisors is an integer number (68908485).

Almost surely, 2^137816969 is an apocalyptic number.

It is an amenable number.

137816969 is a deficient number, since it is larger than the sum of its proper divisors (1).

137816969 is an equidigital number, since it uses as much as digits as its factorization.

137816969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 50.

The square root of 137816969 is about 11739.5472229554. The cubic root of 137816969 is about 516.5363603866.

The spelling of 137816969 in words is "one hundred thirty-seven million, eight hundred sixteen thousand, nine hundred sixty-nine".