10195186979 has 4 divisors (see below), whose sum is σ = 10248011976. Its totient is φ = 10142361984.

The previous prime is 10195186973. The next prime is 10195186987. The reversal of 10195186979 is 97968159101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10195186979 is a prime.

It is a super-2 number, since 2×10195186979² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10195186973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26412209 + ... + 26412594.

It is an arithmetic number, because the mean of its divisors is an integer number (2562002994).

Almost surely, 2^10195186979 is an apocalyptic number.

10195186979 is a deficient number, since it is larger than the sum of its proper divisors (52824997).

10195186979 is an equidigital number, since it uses as much as digits as its factorization.

10195186979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52824996.

The product of its (nonzero) digits is 1224720, while the sum is 56.

The spelling of 10195186979 in words is "ten billion, one hundred ninety-five million, one hundred eighty-six thousand, nine hundred seventy-nine".