1622921413 has 2 divisors, whose sum is σ = 1622921414. Its totient is φ = 1622921412.

The previous prime is 1622921387. The next prime is 1622921471. The reversal of 1622921413 is 3141292261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1187698369 + 435223044 = 34463^2 + 20862^2 .

It is a cyclic number.

It is not a de Polignac number, because 1622921413 - 2⁵ = 1622921381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1622921483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811460706 + 811460707.

It is an arithmetic number, because the mean of its divisors is an integer number (811460707).

Almost surely, 2^1622921413 is an apocalyptic number.

It is an amenable number.

1622921413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1622921413 is an equidigital number, since it uses as much as digits as its factorization.

1622921413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 31.

The square root of 1622921413 is about 40285.4987929900. The cubic root of 1622921413 is about 1175.1658526713.

The spelling of 1622921413 in words is "one billion, six hundred twenty-two million, nine hundred twenty-one thousand, four hundred thirteen".