6191690980 has 12 divisors (see below), whose sum is σ = 13002551100. Its totient is φ = 2476676384.

The previous prime is 6191690951. The next prime is 6191690983. The reversal of 6191690980 is 890961916.

It can be written as a sum of positive squares in 2 ways, for example, as 1498618944 + 4693072036 = 38712^2 + 68506^2 .

It is not an unprimeable number, because it can be changed into a prime (6191690983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154792255 + ... + 154792294.

It is an arithmetic number, because the mean of its divisors is an integer number (1083545925).

Almost surely, 2^6191690980 is an apocalyptic number.

It is an amenable number.

6191690980 is an abundant number, since it is smaller than the sum of its proper divisors (6810860120).

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

6191690980 is a wasteful number, since it uses less digits than its factorization.

6191690980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309584558 (or 309584556 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 49.

The square root of 6191690980 is about 78687.2987209499. The cubic root of 6191690980 is about 1836.2695152750.

The spelling of 6191690980 in words is "six billion, one hundred ninety-one million, six hundred ninety thousand, nine hundred eighty".