19021690332 has 36 divisors (see below), whose sum is σ = 48141968056. Its totient is φ = 6332735520.

The previous prime is 19021690321. The next prime is 19021690339. The reversal of 19021690332 is 23309612091.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19021690339) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 296563 + ... + 354954.

Almost surely, 2^19021690332 is an apocalyptic number.

19021690332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19021690332 is an abundant number, since it is smaller than the sum of its proper divisors (29120277724).

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

19021690332 is a wasteful number, since it uses less digits than its factorization.

19021690332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652338 (or 652333 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The spelling of 19021690332 in words is "nineteen billion, twenty-one million, six hundred ninety thousand, three hundred thirty-two".