19478117374 has 4 divisors (see below), whose sum is σ = 29217176064. Its totient is φ = 9739058686.

The previous prime is 19478117333. The next prime is 19478117411. The reversal of 19478117374 is 47371187491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47371187491 = 1759 ⋅26930749.

It is a super-3 number, since 3×19478117374³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4869529342 + ... + 4869529345.

It is an arithmetic number, because the mean of its divisors is an integer number (7304294016).

Almost surely, 2^19478117374 is an apocalyptic number.

19478117374 is a deficient number, since it is larger than the sum of its proper divisors (9739058690).

19478117374 is an equidigital number, since it uses as much as digits as its factorization.

19478117374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9739058689.

The product of its digits is 1185408, while the sum is 52.

The spelling of 19478117374 in words is "nineteen billion, four hundred seventy-eight million, one hundred seventeen thousand, three hundred seventy-four".