1622631071819 has 2 divisors, whose sum is σ = 1622631071820. Its totient is φ = 1622631071818.

The previous prime is 1622631071813. The next prime is 1622631071833. The reversal of 1622631071819 is 9181701362261.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1622631071819 is a prime.

It is a super-2 number, since 2×1622631071819² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1622631071813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811315535909 + 811315535910.

It is an arithmetic number, because the mean of its divisors is an integer number (811315535910).

Almost surely, 2^{1622631071819} is an apocalyptic number.

1622631071819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1622631071819 is an equidigital number, since it uses as much as digits as its factorization.

1622631071819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 1622631071819 in words is "one trillion, six hundred twenty-two billion, six hundred thirty-one million, seventy-one thousand, eight hundred nineteen".