19029145772 has 384 divisors, whose sum is σ = 49421352960. Its totient is φ = 6185963520.

The previous prime is 19029145637. The next prime is 19029145781. The reversal of 19029145772 is 27754192091.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 83828723 + ... + 83828949.

It is an arithmetic number, because the mean of its divisors is an integer number (128701440).

Almost surely, 2^19029145772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19029145772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24710676480).

19029145772 is an abundant number, since it is smaller than the sum of its proper divisors (30392207188).

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

19029145772 is a wasteful number, since it uses less digits than its factorization.

19029145772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 339 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 47.

The spelling of 19029145772 in words is "nineteen billion, twenty-nine million, one hundred forty-five thousand, seven hundred seventy-two".