19687914053 has 2 divisors, whose sum is σ = 19687914054. Its totient is φ = 19687914052.

The previous prime is 19687914041. The next prime is 19687914061. The reversal of 19687914053 is 35041978691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17285149729 + 2402764324 = 131473^2 + 49018^2 .

It is a cyclic number.

It is not a de Polignac number, because 19687914053 - 2⁸ = 19687913797 is a prime.

It is a super-2 number, since 2×19687914053² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19687913986 and 19687914004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19587914053) 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, 9843957026 + 9843957027.

It is an arithmetic number, because the mean of its divisors is an integer number (9843957027).

Almost surely, 2^19687914053 is an apocalyptic number.

It is an amenable number.

19687914053 is a deficient number, since it is larger than the sum of its proper divisors (1).

19687914053 is an equidigital number, since it uses as much as digits as its factorization.

19687914053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 19687914053 in words is "nineteen billion, six hundred eighty-seven million, nine hundred fourteen thousand, fifty-three".