7658961881 has 8 divisors (see below), whose sum is σ = 7741933344. Its totient is φ = 7576201600.

The previous prime is 7658961833. The next prime is 7658961911. The reversal of 7658961881 is 1881698567.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7658961881 - 2²² = 7654767577 is a prime.

It is a super-2 number, since 2×7658961881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7658961881.

It is not an unprimeable number, because it can be changed into a prime (7658961481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20681 + ... + 125481.

It is an arithmetic number, because the mean of its divisors is an integer number (967741668).

Almost surely, 2^7658961881 is an apocalyptic number.

It is an amenable number.

7658961881 is a deficient number, since it is larger than the sum of its proper divisors (82971463).

7658961881 is a wasteful number, since it uses less digits than its factorization.

7658961881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105591.

The product of its digits is 5806080, while the sum is 59.

The square root of 7658961881 is about 87515.4950908695. The cubic root of 7658961881 is about 1971.1664680860.

The spelling of 7658961881 in words is "seven billion, six hundred fifty-eight million, nine hundred sixty-one thousand, eight hundred eighty-one".