613187394 has 16 divisors (see below), whose sum is σ = 1240155360. Its totient is φ = 202099040.

The previous prime is 613187389. The next prime is 613187401. The reversal of 613187394 is 493781316.

It is a super-2 number, since 2×613187394² = 751997560321022472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 573612 + ... + 574679.

It is an arithmetic number, because the mean of its divisors is an integer number (77509710).

Almost surely, 2^613187394 is an apocalyptic number.

613187394 is an abundant number, since it is smaller than the sum of its proper divisors (626967966).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

613187394 is a wasteful number, since it uses less digits than its factorization.

613187394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148385.

The product of its digits is 108864, while the sum is 42.

The square root of 613187394 is about 24762.6209032889. The cubic root of 613187394 is about 849.5672048149.

The spelling of 613187394 in words is "six hundred thirteen million, one hundred eighty-seven thousand, three hundred ninety-four".