2179577378 has 64 divisors (see below), whose sum is σ = 3885501312. Its totient is φ = 905748480.

The previous prime is 2179577377. The next prime is 2179577399. The reversal of 2179577378 is 8737759712.

It is not an unprimeable number, because it can be changed into a prime (2179577377) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5033450 + ... + 5033882.

It is an arithmetic number, because the mean of its divisors is an integer number (60710958).

Almost surely, 2^2179577378 is an apocalyptic number.

2179577378 is a deficient number, since it is larger than the sum of its proper divisors (1705923934).

2179577378 is a wasteful number, since it uses less digits than its factorization.

2179577378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819.

The product of its digits is 5186160, while the sum is 56.

The square root of 2179577378 is about 46685.9441159756. The cubic root of 2179577378 is about 1296.5544613673.

The spelling of 2179577378 in words is "two billion, one hundred seventy-nine million, five hundred seventy-seven thousand, three hundred seventy-eight".