19538938531102 has 4 divisors (see below), whose sum is σ = 29308407796656. Its totient is φ = 9769469265550.

The previous prime is 19538938531043. The next prime is 19538938531153. The reversal of 19538938531102 is 20113583983591.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4884734632774 + ... + 4884734632777.

It is an arithmetic number, because the mean of its divisors is an integer number (7327101949164).

Almost surely, 2^{19538938531102} is an apocalyptic number.

19538938531102 is a deficient number, since it is larger than the sum of its proper divisors (9769469265554).

19538938531102 is an equidigital number, since it uses as much as digits as its factorization.

19538938531102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9769469265553.

The product of its (nonzero) digits is 6998400, while the sum is 58.

The spelling of 19538938531102 in words is "nineteen trillion, five hundred thirty-eight billion, nine hundred thirty-eight million, five hundred thirty-one thousand, one hundred two".