137832691 has 2 divisors, whose sum is σ = 137832692. Its totient is φ = 137832690.

The previous prime is 137832689. The next prime is 137832697. The reversal of 137832691 is 196238731.

137832691 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 is a cyclic number.

It is not a de Polignac number, because 137832691 - 2¹ = 137832689 is a prime.

Together with 137832689, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (137832697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68916345 + 68916346.

It is an arithmetic number, because the mean of its divisors is an integer number (68916346).

Almost surely, 2^137832691 is an apocalyptic number.

137832691 is a deficient number, since it is larger than the sum of its proper divisors (1).

137832691 is an equidigital number, since it uses as much as digits as its factorization.

137832691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 137832691 is about 11740.2168208258. The cubic root of 137832691 is about 516.5560015960.

The spelling of 137832691 in words is "one hundred thirty-seven million, eight hundred thirty-two thousand, six hundred ninety-one".