137868394 has 16 divisors (see below), whose sum is σ = 216892800. Its totient is φ = 65601360.

The previous prime is 137868391. The next prime is 137868397. The reversal of 137868394 is 493868731.

It is a happy number.

137868394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (137868391) and next prime (137868397).

It is not an unprimeable number, because it can be changed into a prime (137868391) 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, 1624 + ... + 16684.

It is an arithmetic number, because the mean of its divisors is an integer number (13555800).

Almost surely, 2^137868394 is an apocalyptic number.

137868394 is a deficient number, since it is larger than the sum of its proper divisors (79024406).

137868394 is a wasteful number, since it uses less digits than its factorization.

137868394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15285.

The product of its digits is 870912, while the sum is 49.

The square root of 137868394 is about 11741.7372649877. The cubic root of 137868394 is about 516.6005991600.

The spelling of 137868394 in words is "one hundred thirty-seven million, eight hundred sixty-eight thousand, three hundred ninety-four".