19868292238 has 4 divisors (see below), whose sum is σ = 29802438360. Its totient is φ = 9934146118.

The previous prime is 19868292221. The next prime is 19868292253. The reversal of 19868292238 is 83229286891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83229286891 = 137 ⋅607513043.

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, 4967073058 + ... + 4967073061.

It is an arithmetic number, because the mean of its divisors is an integer number (7450609590).

Almost surely, 2^19868292238 is an apocalyptic number.

19868292238 is a deficient number, since it is larger than the sum of its proper divisors (9934146122).

19868292238 is an equidigital number, since it uses as much as digits as its factorization.

19868292238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9934146121.

The product of its digits is 5971968, while the sum is 58.

The spelling of 19868292238 in words is "nineteen billion, eight hundred sixty-eight million, two hundred ninety-two thousand, two hundred thirty-eight".