1613993396 has 24 divisors (see below), whose sum is σ = 2996440776. Its totient is φ = 758051840.

The previous prime is 1613993389. The next prime is 1613993401. The reversal of 1613993396 is 6933993161.

It can be written as a sum of positive squares in 4 ways, for example, as 236544400 + 1377448996 = 15380^2 + 37114^2 .

It is a super-2 number, since 2×1613993396² = 5209949364663225632, which contains 22 as substring.

It is a congruent number.

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, 12650 + ... + 58206.

It is an arithmetic number, because the mean of its divisors is an integer number (124851699).

Almost surely, 2^1613993396 is an apocalyptic number.

It is an amenable number.

1613993396 is a deficient number, since it is larger than the sum of its proper divisors (1382447380).

1613993396 is a wasteful number, since it uses less digits than its factorization.

1613993396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46099 (or 46097 counting only the distinct ones).

The product of its digits is 708588, while the sum is 50.

The square root of 1613993396 is about 40174.5366619206. The cubic root of 1613993396 is about 1173.0069477495.

The spelling of 1613993396 in words is "one billion, six hundred thirteen million, nine hundred ninety-three thousand, three hundred ninety-six".