19497841000 has 64 divisors (see below), whose sum is σ = 49772698560. Its totient is φ = 7090120000.

The previous prime is 19497840953. The next prime is 19497841043. The reversal of 19497841000 is 14879491.

It is a super-2 number, since 2×19497841000² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 875266 + ... + 897265.

It is an arithmetic number, because the mean of its divisors is an integer number (777698415).

Almost surely, 2^19497841000 is an apocalyptic number.

19497841000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19497841000 is an abundant number, since it is smaller than the sum of its proper divisors (30274857560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19497841000 is a wasteful number, since it uses less digits than its factorization.

19497841000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772563 (or 1772549 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 19497841000 in words is "nineteen billion, four hundred ninety-seven million, eight hundred forty-one thousand".