82738894613 has 2 divisors, whose sum is σ = 82738894614. Its totient is φ = 82738894612.

The previous prime is 82738894561. The next prime is 82738894621. The reversal of 82738894613 is 31649883728.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81006836689 + 1732057924 = 284617^2 + 41618^2 .

It is a cyclic number.

It is not a de Polignac number, because 82738894613 - 2¹² = 82738890517 is a prime.

It is a super-2 number, since 2×82738894613² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82738894013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41369447306 + 41369447307.

It is an arithmetic number, because the mean of its divisors is an integer number (41369447307).

Almost surely, 2^82738894613 is an apocalyptic number.

It is an amenable number.

82738894613 is a deficient number, since it is larger than the sum of its proper divisors (1).

82738894613 is an equidigital number, since it uses as much as digits as its factorization.

82738894613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13934592, while the sum is 59.

The spelling of 82738894613 in words is "eighty-two billion, seven hundred thirty-eight million, eight hundred ninety-four thousand, six hundred thirteen".