1613739393 has 18 divisors (see below), whose sum is σ = 2711522034. Its totient is φ = 922136544.

The previous prime is 1613739373. The next prime is 1613739397. The reversal of 1613739393 is 3939373161.

It can be written as a sum of positive squares in only one way, i.e., 830131344 + 783608049 = 28812^2 + 27993^2 .

It is not a de Polignac number, because 1613739393 - 2⁸ = 1613739137 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1613739397) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1829196 + ... + 1830077.

It is an arithmetic number, because the mean of its divisors is an integer number (150640113).

Almost surely, 2^1613739393 is an apocalyptic number.

It is an amenable number.

1613739393 is a deficient number, since it is larger than the sum of its proper divisors (1097782641).

1613739393 is a wasteful number, since it uses less digits than its factorization.

1613739393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3659293 (or 3659283 counting only the distinct ones).

The product of its digits is 275562, while the sum is 45.

The square root of 1613739393 is about 40171.3752938582. The cubic root of 1613739393 is about 1172.9454103406.

The spelling of 1613739393 in words is "one billion, six hundred thirteen million, seven hundred thirty-nine thousand, three hundred ninety-three".