137320379 has 4 divisors (see below), whose sum is σ = 156937584. Its totient is φ = 117703176.

The previous prime is 137320369. The next prime is 137320397. The reversal of 137320379 is 973023731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 137320379 - 2⁴ = 137320363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137320349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9808592 + ... + 9808605.

It is an arithmetic number, because the mean of its divisors is an integer number (39234396).

Almost surely, 2^137320379 is an apocalyptic number.

137320379 is a deficient number, since it is larger than the sum of its proper divisors (19617205).

137320379 is an equidigital number, since it uses as much as digits as its factorization.

137320379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19617204.

The product of its (nonzero) digits is 23814, while the sum is 35.

The square root of 137320379 is about 11718.3778314236. The cubic root of 137320379 is about 515.9152092614.

The spelling of 137320379 in words is "one hundred thirty-seven million, three hundred twenty thousand, three hundred seventy-nine".