19896424190 has 16 divisors (see below), whose sum is σ = 36489292128. Its totient is φ = 7808407776.

The previous prime is 19896424187. The next prime is 19896424241. The reversal of 19896424190 is 9142469891.

It is a super-2 number, since 2×19896424190² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

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, 18769682 + ... + 18770741.

It is an arithmetic number, because the mean of its divisors is an integer number (2280580758).

Almost surely, 2^19896424190 is an apocalyptic number.

19896424190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19896424190 is a deficient number, since it is larger than the sum of its proper divisors (16592867938).

19896424190 is a wasteful number, since it uses less digits than its factorization.

19896424190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37540483.

The product of its (nonzero) digits is 1119744, while the sum is 53.

The spelling of 19896424190 in words is "nineteen billion, eight hundred ninety-six million, four hundred twenty-four thousand, one hundred ninety".