979131476189 has 2 divisors, whose sum is σ = 979131476190. Its totient is φ = 979131476188.

The previous prime is 979131476177. The next prime is 979131476293. The reversal of 979131476189 is 981674131979.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 743935575289 + 235195900900 = 862517^2 + 484970^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-979131476189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (979131476119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489565738094 + 489565738095.

It is an arithmetic number, because the mean of its divisors is an integer number (489565738095).

Almost surely, 2^979131476189 is an apocalyptic number.

It is an amenable number.

979131476189 is a deficient number, since it is larger than the sum of its proper divisors (1).

979131476189 is an equidigital number, since it uses as much as digits as its factorization.

979131476189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20575296, while the sum is 65.

The spelling of 979131476189 in words is "nine hundred seventy-nine billion, one hundred thirty-one million, four hundred seventy-six thousand, one hundred eighty-nine".