19007193240 has 256 divisors, whose sum is σ = 73088179200. Its totient is φ = 4303715328.

The previous prime is 19007193199. The next prime is 19007193263. The reversal of 19007193240 is 4239170091.

It is a super-2 number, since 2×19007193240² (a number of 21 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 19007193195 and 19007193204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 797172 + ... + 820668.

It is an arithmetic number, because the mean of its divisors is an integer number (285500700).

Almost surely, 2^19007193240 is an apocalyptic number.

19007193240 is a gapful number since it is divisible by the number (10) 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 19007193240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36544089600).

19007193240 is an abundant number, since it is smaller than the sum of its proper divisors (54080985960).

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

19007193240 is a wasteful number, since it uses less digits than its factorization.

19007193240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23631 (or 23621 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The spelling of 19007193240 in words is "nineteen billion, seven million, one hundred ninety-three thousand, two hundred forty".