2161877674 has 16 divisors (see below), whose sum is σ = 3659605920. Its totient is φ = 948786160.

The previous prime is 2161877671. The next prime is 2161877681. The reversal of 2161877674 is 4767781612.

It is not an unprimeable number, because it can be changed into a prime (2161877671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1693624 + ... + 1694899.

It is an arithmetic number, because the mean of its divisors is an integer number (228725370).

Almost surely, 2^2161877674 is an apocalyptic number.

2161877674 is a deficient number, since it is larger than the sum of its proper divisors (1497728246).

2161877674 is a wasteful number, since it uses less digits than its factorization.

2161877674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388565.

The product of its digits is 790272, while the sum is 49.

The square root of 2161877674 is about 46495.9963222641. The cubic root of 2161877674 is about 1293.0352727577.

The spelling of 2161877674 in words is "two billion, one hundred sixty-one million, eight hundred seventy-seven thousand, six hundred seventy-four".