18459442630 has 8 divisors (see below), whose sum is σ = 33226996752. Its totient is φ = 7383777048.

The previous prime is 18459442601. The next prime is 18459442633. The reversal of 18459442630 is 3624495481.

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

It is a super-2 number, since 2×18459442630² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18459442633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 922972122 + ... + 922972141.

It is an arithmetic number, because the mean of its divisors is an integer number (4153374594).

Almost surely, 2^18459442630 is an apocalyptic number.

18459442630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18459442630 is a deficient number, since it is larger than the sum of its proper divisors (14767554122).

18459442630 is a wasteful number, since it uses less digits than its factorization.

18459442630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845944270.

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 18459442630 in words is "eighteen billion, four hundred fifty-nine million, four hundred forty-two thousand, six hundred thirty".