1613642344 has 8 divisors (see below), whose sum is σ = 3025579410. Its totient is φ = 806821168.

The previous prime is 1613642321. The next prime is 1613642377. The reversal of 1613642344 is 4432463161.

It can be written as a sum of positive squares in only one way, i.e., 1612986244 + 656100 = 40162^2 + 810^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1613642344² = 5207683228699628672, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100852639 + ... + 100852654.

Almost surely, 2^1613642344 is an apocalyptic number.

It is an amenable number.

1613642344 is a deficient number, since it is larger than the sum of its proper divisors (1411937066).

1613642344 is a wasteful number, since it uses less digits than its factorization.

1613642344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201705299 (or 201705295 counting only the distinct ones).

The product of its digits is 41472, while the sum is 34.

The square root of 1613642344 is about 40170.1673384615. The cubic root of 1613642344 is about 1172.9218965354.

The spelling of 1613642344 in words is "one billion, six hundred thirteen million, six hundred forty-two thousand, three hundred forty-four".