19012662272 has 66 divisors (see below), whose sum is σ = 38324519442. Its totient is φ = 9427267584.

The previous prime is 19012662257. The next prime is 19012662287. The reversal of 19012662272 is 27226621091.

It is an interprime number because it is at equal distance from previous prime (19012662257) and next prime (19012662287).

It can be written as a sum of positive squares in only one way, i.e., 18916151296 + 96510976 = 137536^2 + 9824^2 .

It is a super-2 number, since 2×19012662272² (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 5 ways as a sum of consecutive naturals, for example, 61930343 + ... + 61930649.

It is an arithmetic number, because the mean of its divisors is an integer number (580674537).

Almost surely, 2^19012662272 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 19012662272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19162259721).

19012662272 is an abundant number, since it is smaller than the sum of its proper divisors (19311857170).

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

19012662272 is an frugal number, since it uses more digits than its factorization.

19012662272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 19012662272 in words is "nineteen billion, twelve million, six hundred sixty-two thousand, two hundred seventy-two".