19944526190 has 8 divisors (see below), whose sum is σ = 35900147160. Its totient is φ = 7977810472.

The previous prime is 19944526183. The next prime is 19944526201. The reversal of 19944526190 is 9162544991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×19944526190² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 997226300 + ... + 997226319.

It is an arithmetic number, because the mean of its divisors is an integer number (4487518395).

Almost surely, 2^19944526190 is an apocalyptic number.

19944526190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19944526190 is a deficient number, since it is larger than the sum of its proper divisors (15955620970).

19944526190 is a wasteful number, since it uses less digits than its factorization.

19944526190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994452626.

The product of its (nonzero) digits is 699840, while the sum is 50.

The spelling of 19944526190 in words is "nineteen billion, nine hundred forty-four million, five hundred twenty-six thousand, one hundred ninety".