19945683031 has 2 divisors, whose sum is σ = 19945683032. Its totient is φ = 19945683030.

The previous prime is 19945682983. The next prime is 19945683049. The reversal of 19945683031 is 13038654991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19945683031 - 2²³ = 19937294423 is a prime.

It is a super-2 number, since 2×19945683031² (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 (19945683091) 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, 9972841515 + 9972841516.

It is an arithmetic number, because the mean of its divisors is an integer number (9972841516).

Almost surely, 2^19945683031 is an apocalyptic number.

19945683031 is a deficient number, since it is larger than the sum of its proper divisors (1).

19945683031 is an equidigital number, since it uses as much as digits as its factorization.

19945683031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 49.

The spelling of 19945683031 in words is "nineteen billion, nine hundred forty-five million, six hundred eighty-three thousand, thirty-one".