1613657079 has 16 divisors (see below), whose sum is σ = 2391267040. Its totient is φ = 1075472640.

The previous prime is 1613657077. The next prime is 1613657093. The reversal of 1613657079 is 9707563161.

1613657079 is a `hidden beast` number, since 1 + 6 + 1 + 3 + 6 + 570 + 79 = 666.

It is not a de Polignac number, because 1613657079 - 2¹ = 1613657077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1613657077) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136929 + ... + 148245.

It is an arithmetic number, because the mean of its divisors is an integer number (149454190).

Almost surely, 2^1613657079 is an apocalyptic number.

1613657079 is a deficient number, since it is larger than the sum of its proper divisors (777609961).

1613657079 is a wasteful number, since it uses less digits than its factorization.

1613657079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16607 (or 16601 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 1613657079 is about 40170.3507452947. The cubic root of 1613657079 is about 1172.9254667093.

The spelling of 1613657079 in words is "one billion, six hundred thirteen million, six hundred fifty-seven thousand, seventy-nine".