19390390272 has 168 divisors, whose sum is σ = 61107934680. Its totient is φ = 5875630080.

The previous prime is 19390390259. The next prime is 19390390289. The reversal of 19390390272 is 27209309391.

It is a happy number.

19390390272 is a `hidden beast` number, since 193 + 9 + 0 + 390 + 2 + 72 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 799054 + ... + 822962.

Almost surely, 2^19390390272 is an apocalyptic number.

19390390272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19390390272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30553967340).

19390390272 is an abundant number, since it is smaller than the sum of its proper divisors (41717544408).

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

19390390272 is a wasteful number, since it uses less digits than its factorization.

19390390272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23952 (or 23925 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 45.

The spelling of 19390390272 in words is "nineteen billion, three hundred ninety million, three hundred ninety thousand, two hundred seventy-two".