19081049264 has 40 divisors (see below), whose sum is σ = 38340090720. Its totient is φ = 9188480000.

The previous prime is 19081049261. The next prime is 19081049287. The reversal of 19081049264 is 46294018091.

It is a super-4 number, since 4×19081049264⁴ (a number of 42 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (19081049261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134789 + ... + 237339.

It is an arithmetic number, because the mean of its divisors is an integer number (958502268).

Almost surely, 2^19081049264 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 19081049264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19170045360).

19081049264 is an abundant number, since it is smaller than the sum of its proper divisors (19259041456).

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

19081049264 is a wasteful number, since it uses less digits than its factorization.

19081049264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102989 (or 102983 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 19081049264 in words is "nineteen billion, eighty-one million, forty-nine thousand, two hundred sixty-four".