1622631071813 has 2 divisors, whose sum is σ = 1622631071814. Its totient is φ = 1622631071812.

The previous prime is 1622631071587. The next prime is 1622631071819. The reversal of 1622631071813 is 3181701362261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1622217437569 + 413634244 = 1273663^2 + 20338^2 .

It is a cyclic number.

It is not a de Polignac number, because 1622631071813 - 2⁸ = 1622631071557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1622631071819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811315535906 + 811315535907.

It is an arithmetic number, because the mean of its divisors is an integer number (811315535907).

Almost surely, 2^{1622631071813} is an apocalyptic number.

It is an amenable number.

1622631071813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1622631071813 is an equidigital number, since it uses as much as digits as its factorization.

1622631071813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 1622631071813 in words is "one trillion, six hundred twenty-two billion, six hundred thirty-one million, seventy-one thousand, eight hundred thirteen".