18894220130 has 8 divisors (see below), whose sum is σ = 34009596252. Its totient is φ = 7557688048.

The previous prime is 18894220127. The next prime is 18894220151. The reversal of 18894220130 is 3102249881.

It can be written as a sum of positive squares in 2 ways, for example, as 17244154489 + 1650065641 = 131317^2 + 40621^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 944710997 + ... + 944711016.

Almost surely, 2^18894220130 is an apocalyptic number.

18894220130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18894220130 is a deficient number, since it is larger than the sum of its proper divisors (15115376122).

18894220130 is a wasteful number, since it uses less digits than its factorization.

18894220130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889422020.

The product of its (nonzero) digits is 27648, while the sum is 38.

The spelling of 18894220130 in words is "eighteen billion, eight hundred ninety-four million, two hundred twenty thousand, one hundred thirty".