6161931220 has 48 divisors (see below), whose sum is σ = 13137417216. Its totient is φ = 2427440000.

The previous prime is 6161931199. The next prime is 6161931247. The reversal of 6161931220 is 221391616.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377835 + ... + 393805.

It is an arithmetic number, because the mean of its divisors is an integer number (273696192).

Almost surely, 2^6161931220 is an apocalyptic number.

It is an amenable number.

6161931220 is an abundant number, since it is smaller than the sum of its proper divisors (6975485996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6161931220 is a wasteful number, since it uses less digits than its factorization.

6161931220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16272 (or 16270 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 6161931220 is about 78497.9695278801. The cubic root of 6161931220 is about 1833.3228390217.

The spelling of 6161931220 in words is "six billion, one hundred sixty-one million, nine hundred thirty-one thousand, two hundred twenty".