1012613639 has 2 divisors, whose sum is σ = 1012613640. Its totient is φ = 1012613638.

The previous prime is 1012613629. The next prime is 1012613671. The reversal of 1012613639 is 9363162101.

It is an a-pointer prime, because the next prime (1012613671) can be obtained adding 1012613639 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1012613639 - 2²⁰ = 1011565063 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012613629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506306819 + 506306820.

It is an arithmetic number, because the mean of its divisors is an integer number (506306820).

Almost surely, 2^1012613639 is an apocalyptic number.

1012613639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012613639 is an equidigital number, since it uses as much as digits as its factorization.

1012613639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 1012613639 is about 31821.5907679047. The cubic root of 1012613639 is about 1004.1869909727.

The spelling of 1012613639 in words is "one billion, twelve million, six hundred thirteen thousand, six hundred thirty-nine".