19031525990 has 32 divisors (see below), whose sum is σ = 34417111680. Its totient is φ = 7577034624.

The previous prime is 19031525987. The next prime is 19031526023. The reversal of 19031525990 is 9952513091.

It is a super-3 number, since 3×19031525990³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3052196 + ... + 3058424.

It is an arithmetic number, because the mean of its divisors is an integer number (1075534740).

Almost surely, 2^19031525990 is an apocalyptic number.

19031525990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19031525990 is a deficient number, since it is larger than the sum of its proper divisors (15385585690).

19031525990 is a wasteful number, since it uses less digits than its factorization.

19031525990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7616.

The product of its (nonzero) digits is 109350, while the sum is 44.

The spelling of 19031525990 in words is "nineteen billion, thirty-one million, five hundred twenty-five thousand, nine hundred ninety".