137190997 has 8 divisors (see below), whose sum is σ = 139174200. Its totient is φ = 135221184.

The previous prime is 137190973. The next prime is 137191007. The reversal of 137190997 is 799091731.

137190997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 25867396 + 111323601 = 5086^2 + 10551^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 137190997 - 2²³ = 128802389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137190947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18279 + ... + 24667.

It is an arithmetic number, because the mean of its divisors is an integer number (17396775).

Almost surely, 2^137190997 is an apocalyptic number.

It is an amenable number.

137190997 is a deficient number, since it is larger than the sum of its proper divisors (1983203).

137190997 is a wasteful number, since it uses less digits than its factorization.

137190997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6695.

The product of its (nonzero) digits is 107163, while the sum is 46.

The square root of 137190997 is about 11712.8560564877. The cubic root of 137190997 is about 515.7531281562.

The spelling of 137190997 in words is "one hundred thirty-seven million, one hundred ninety thousand, nine hundred ninety-seven".