18672490142 has 4 divisors (see below), whose sum is σ = 28008735216. Its totient is φ = 9336245070.

The previous prime is 18672490139. The next prime is 18672490153. The reversal of 18672490142 is 24109427681.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24109427681 = 1367 ⋅17636743.

It is a junction number, because it is equal to n+sod(n) for n = 18672490093 and 18672490102.

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, 4668122534 + ... + 4668122537.

It is an arithmetic number, because the mean of its divisors is an integer number (7002183804).

Almost surely, 2^18672490142 is an apocalyptic number.

18672490142 is a deficient number, since it is larger than the sum of its proper divisors (9336245074).

18672490142 is an equidigital number, since it uses as much as digits as its factorization.

18672490142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9336245073.

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 18672490142 in words is "eighteen billion, six hundred seventy-two million, four hundred ninety thousand, one hundred forty-two".