2156769107 has 16 divisors (see below), whose sum is σ = 2363145984. Its totient is φ = 1959552000.

The previous prime is 2156769079. The next prime is 2156769149. The reversal of 2156769107 is 7019676512.

It is a cyclic number.

It is not a de Polignac number, because 2156769107 - 2⁸ = 2156768851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2156769007) 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, 217007 + ... + 226727.

It is an arithmetic number, because the mean of its divisors is an integer number (147696624).

Almost surely, 2^2156769107 is an apocalyptic number.

2156769107 is a deficient number, since it is larger than the sum of its proper divisors (206376877).

2156769107 is a wasteful number, since it uses less digits than its factorization.

2156769107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10190.

The product of its (nonzero) digits is 158760, while the sum is 44.

The square root of 2156769107 is about 46441.0282724231. The cubic root of 2156769107 is about 1292.0159787009.

The spelling of 2156769107 in words is "two billion, one hundred fifty-six million, seven hundred sixty-nine thousand, one hundred seven".