19538104490 has 16 divisors (see below), whose sum is σ = 35221966560. Its totient is φ = 7803379920.

The previous prime is 19538104447. The next prime is 19538104543. The reversal of 19538104490 is 9440183591.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1475816 + ... + 1488995.

It is an arithmetic number, because the mean of its divisors is an integer number (2201372910).

Almost surely, 2^19538104490 is an apocalyptic number.

19538104490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19538104490 is a deficient number, since it is larger than the sum of its proper divisors (15683862070).

19538104490 is a wasteful number, since it uses less digits than its factorization.

19538104490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2965477.

The product of its (nonzero) digits is 155520, while the sum is 44.

The spelling of 19538104490 in words is "nineteen billion, five hundred thirty-eight million, one hundred four thousand, four hundred ninety".