137892691 has 2 divisors, whose sum is σ = 137892692. Its totient is φ = 137892690.

The previous prime is 137892653. The next prime is 137892731. The reversal of 137892691 is 196298731.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (196298731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 137892691 - 2⁹ = 137892179 is a prime.

It is not a weakly prime, because it can be changed into another prime (137892791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68946345 + 68946346.

It is an arithmetic number, because the mean of its divisors is an integer number (68946346).

Almost surely, 2^137892691 is an apocalyptic number.

137892691 is a deficient number, since it is larger than the sum of its proper divisors (1).

137892691 is an equidigital number, since it uses as much as digits as its factorization.

137892691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 46.

The square root of 137892691 is about 11742.7718618732. The cubic root of 137892691 is about 516.6309447843.

The spelling of 137892691 in words is "one hundred thirty-seven million, eight hundred ninety-two thousand, six hundred ninety-one".