2616863913 has 12 divisors (see below), whose sum is σ = 3801766020. Its totient is φ = 1734490656.

The previous prime is 2616863903. The next prime is 2616863929. The reversal of 2616863913 is 3193686162.

2616863913 is a `hidden beast` number, since 2 + 6 + 1 + 6 + 8 + 639 + 1 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1523106729 + 1093757184 = 39027^2 + 33072^2 .

It is not a de Polignac number, because 2616863913 - 2⁴ = 2616863897 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 (2616863903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 838798 + ... + 841911.

It is an arithmetic number, because the mean of its divisors is an integer number (316813835).

Almost surely, 2^2616863913 is an apocalyptic number.

It is an amenable number.

2616863913 is a deficient number, since it is larger than the sum of its proper divisors (1184902107).

2616863913 is a wasteful number, since it uses less digits than its factorization.

2616863913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680888 (or 1680885 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 2616863913 is about 51155.2921309223. The cubic root of 2616863913 is about 1378.0354165595.

The spelling of 2616863913 in words is "two billion, six hundred sixteen million, eight hundred sixty-three thousand, nine hundred thirteen".