19464020318 has 8 divisors (see below), whose sum is σ = 30732663720. Its totient is φ = 9219799080.

The previous prime is 19464020293. The next prime is 19464020321. The reversal of 19464020318 is 81302046491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×19464020318² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 512211061 = 19464020318 / (1 + 9 + 4 + 6 + 4 + 0 + 2 + 0 + 3 + 1 + 8).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256105493 + ... + 256105568.

It is an arithmetic number, because the mean of its divisors is an integer number (3841582965).

Almost surely, 2^19464020318 is an apocalyptic number.

19464020318 is a deficient number, since it is larger than the sum of its proper divisors (11268643402).

19464020318 is a wasteful number, since it uses less digits than its factorization.

19464020318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512211082.

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 19464020318 in words is "nineteen billion, four hundred sixty-four million, twenty thousand, three hundred eighteen".