19628182631 has 2 divisors, whose sum is σ = 19628182632. Its totient is φ = 19628182630.

The previous prime is 19628182627. The next prime is 19628182661. The reversal of 19628182631 is 13628182691.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19628182631 - 2² = 19628182627 is a prime.

It is a super-2 number, since 2×19628182631² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19628182661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9814091315 + 9814091316.

It is an arithmetic number, because the mean of its divisors is an integer number (9814091316).

Almost surely, 2^19628182631 is an apocalyptic number.

19628182631 is a deficient number, since it is larger than the sum of its proper divisors (1).

19628182631 is an equidigital number, since it uses as much as digits as its factorization.

19628182631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 47.

The spelling of 19628182631 in words is "nineteen billion, six hundred twenty-eight million, one hundred eighty-two thousand, six hundred thirty-one".