18779142292 has 6 divisors (see below), whose sum is σ = 32863499018. Its totient is φ = 9389571144.

The previous prime is 18779142269. The next prime is 18779142407. The reversal of 18779142292 is 29224197781.

It can be written as a sum of positive squares in only one way, i.e., 18732301956 + 46840336 = 136866^2 + 6844^2 .

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, 2347392783 + ... + 2347392790.

Almost surely, 2^18779142292 is an apocalyptic number.

It is an amenable number.

18779142292 is a deficient number, since it is larger than the sum of its proper divisors (14084356726).

18779142292 is a wasteful number, since it uses less digits than its factorization.

18779142292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4694785577 (or 4694785575 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 52.

The spelling of 18779142292 in words is "eighteen billion, seven hundred seventy-nine million, one hundred forty-two thousand, two hundred ninety-two".