2132355778 has 16 divisors (see below), whose sum is σ = 3663619200. Its totient is φ = 911828736.

The previous prime is 2132355721. The next prime is 2132355787. The reversal of 2132355778 is 8775532312.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163326 + ... + 175897.

It is an arithmetic number, because the mean of its divisors is an integer number (228976200).

Almost surely, 2^2132355778 is an apocalyptic number.

2132355778 is a deficient number, since it is larger than the sum of its proper divisors (1531263422).

2132355778 is a wasteful number, since it uses less digits than its factorization.

2132355778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339681.

The product of its digits is 352800, while the sum is 43.

The square root of 2132355778 is about 46177.4379757041. The cubic root of 2132355778 is about 1287.1225204126.

The spelling of 2132355778 in words is "two billion, one hundred thirty-two million, three hundred fifty-five thousand, seven hundred seventy-eight".