2916861021 has 12 divisors (see below), whose sum is σ = 4349155200. Its totient is φ = 1881845640.

The previous prime is 2916860993. The next prime is 2916861023. The reversal of 2916861021 is 1201686192.

2916861021 is a `hidden beast` number, since 2 + 9 + 16 + 8 + 610 + 21 = 666.

It is not a de Polignac number, because 2916861021 - 2⁶ = 2916860957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2916861023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5227071 + ... + 5227628.

It is an arithmetic number, because the mean of its divisors is an integer number (362429600).

Almost surely, 2^2916861021 is an apocalyptic number.

It is an amenable number.

2916861021 is a deficient number, since it is larger than the sum of its proper divisors (1432294179).

2916861021 is a wasteful number, since it uses less digits than its factorization.

2916861021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10454736 (or 10454733 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 2916861021 is about 54007.9718282403. The cubic root of 2916861021 is about 1428.8015487403.

The spelling of 2916861021 in words is "two billion, nine hundred sixteen million, eight hundred sixty-one thousand, twenty-one".