19442328874 has 8 divisors (see below), whose sum is σ = 29169225828. Its totient is φ = 9719253600.

The previous prime is 19442328859. The next prime is 19442328889. The reversal of 19442328874 is 47882324491.

It is an interprime number because it is at equal distance from previous prime (19442328859) and next prime (19442328889).

It can be written as a sum of positive squares in 2 ways, for example, as 19416471649 + 25857225 = 139343^2 + 5085^2 .

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

It is a super-3 number, since 3×19442328874³ (a number of 32 digits) contains 333 as substring.

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, 942667 + ... + 963070.

Almost surely, 2^19442328874 is an apocalyptic number.

19442328874 is a deficient number, since it is larger than the sum of its proper divisors (9726896954).

19442328874 is a wasteful number, since it uses less digits than its factorization.

19442328874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910840.

The product of its digits is 3096576, while the sum is 52.

The spelling of 19442328874 in words is "nineteen billion, four hundred forty-two million, three hundred twenty-eight thousand, eight hundred seventy-four".