6190909681 has 16 divisors (see below), whose sum is σ = 6853811328. Its totient is φ = 5544806400.

The previous prime is 6190909663. The next prime is 6190909691. The reversal of 6190909681 is 1869090916.

It is a cyclic number.

It is not a de Polignac number, because 6190909681 - 2⁹ = 6190909169 is a prime.

It is a super-2 number, since 2×6190909681² = 76654725356599043522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6190909651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1789105 + ... + 1792561.

It is an arithmetic number, because the mean of its divisors is an integer number (428363208).

Almost surely, 2^6190909681 is an apocalyptic number.

It is an amenable number.

6190909681 is a deficient number, since it is larger than the sum of its proper divisors (662901647).

6190909681 is a wasteful number, since it uses less digits than its factorization.

6190909681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5832.

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

The square root of 6190909681 is about 78682.3339829215. Note that the first 3 decimals coincide. The cubic root of 6190909681 is about 1836.1922754230.

The spelling of 6190909681 in words is "six billion, one hundred ninety million, nine hundred nine thousand, six hundred eighty-one".