19474528818 has 16 divisors (see below), whose sum is σ = 39306389760. Its totient is φ = 6431954256.

The previous prime is 19474528811. The next prime is 19474528837. The reversal of 19474528818 is 81882547491.

It is a super-2 number, since 2×19474528818² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19474528811) 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, 14888130 + ... + 14889437.

It is an arithmetic number, because the mean of its divisors is an integer number (2456649360).

Almost surely, 2^19474528818 is an apocalyptic number.

19474528818 is an abundant number, since it is smaller than the sum of its proper divisors (19831860942).

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

19474528818 is a wasteful number, since it uses less digits than its factorization.

19474528818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29777681.

The product of its digits is 5160960, while the sum is 57.

The spelling of 19474528818 in words is "nineteen billion, four hundred seventy-four million, five hundred twenty-eight thousand, eight hundred eighteen".