19902393063 has 48 divisors (see below), whose sum is σ = 34409905920. Its totient is φ = 11335993200.

The previous prime is 19902393059. The next prime is 19902393193. The reversal of 19902393063 is 36039320991.

It is not a de Polignac number, because 19902393063 - 2² = 19902393059 is a prime.

It is a super-2 number, since 2×19902393063² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19902393023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 387268 + ... + 435638.

It is an arithmetic number, because the mean of its divisors is an integer number (716873040).

Almost surely, 2^19902393063 is an apocalyptic number.

19902393063 is a deficient number, since it is larger than the sum of its proper divisors (14507512857).

19902393063 is a wasteful number, since it uses less digits than its factorization.

19902393063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48705 (or 48692 counting only the distinct ones).

The product of its (nonzero) digits is 236196, while the sum is 45.

The spelling of 19902393063 in words is "nineteen billion, nine hundred two million, three hundred ninety-three thousand, sixty-three".