613935491 has 4 divisors (see below), whose sum is σ = 661161312. Its totient is φ = 566709672.

The previous prime is 613935457. The next prime is 613935493. The reversal of 613935491 is 194539316.

613935491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 613935491 - 2²⁶ = 546826627 is a prime.

It is a super-2 number, since 2×613935491² = 753833574218822162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613935493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23612891 + ... + 23612916.

It is an arithmetic number, because the mean of its divisors is an integer number (165290328).

Almost surely, 2^613935491 is an apocalyptic number.

613935491 is a deficient number, since it is larger than the sum of its proper divisors (47225821).

613935491 is a wasteful number, since it uses less digits than its factorization.

613935491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47225820.

The product of its digits is 87480, while the sum is 41.

The square root of 613935491 is about 24777.7216668523. The cubic root of 613935491 is about 849.9125589405.

The spelling of 613935491 in words is "six hundred thirteen million, nine hundred thirty-five thousand, four hundred ninety-one".