19085061072 has 320 divisors, whose sum is σ = 64425590784. Its totient is φ = 4720657920.

The previous prime is 19085061071. The next prime is 19085061077. The reversal of 19085061072 is 27016058091.

It is a super-2 number, since 2×19085061072² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19085061072.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19085061071) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29497453 + ... + 29498099.

Almost surely, 2^19085061072 is an apocalyptic number.

19085061072 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 19085061072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32212795392).

19085061072 is an abundant number, since it is smaller than the sum of its proper divisors (45340529712).

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

19085061072 is a wasteful number, since it uses less digits than its factorization.

19085061072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046 (or 1040 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 39.

The spelling of 19085061072 in words is "nineteen billion, eighty-five million, sixty-one thousand, seventy-two".