1616640707 has 12 divisors (see below), whose sum is σ = 1870496040. Its totient is φ = 1392320160.

The previous prime is 1616640679. The next prime is 1616640709. The reversal of 1616640707 is 7070466161.

It is not a de Polignac number, because 1616640707 - 2²⁴ = 1599863491 is a prime.

It is a super-2 number, since 2×1616640707² = 5227054351058919698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1616640709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 349298 + ... + 353895.

It is an arithmetic number, because the mean of its divisors is an integer number (155874670).

Almost surely, 2^1616640707 is an apocalyptic number.

1616640707 is a deficient number, since it is larger than the sum of its proper divisors (253855333).

1616640707 is a wasteful number, since it uses less digits than its factorization.

1616640707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703234 (or 703223 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 1616640707 is about 40207.4707859124. The cubic root of 1616640707 is about 1173.6479288806.

The spelling of 1616640707 in words is "one billion, six hundred sixteen million, six hundred forty thousand, seven hundred seven".