18010661430 has 16 divisors (see below), whose sum is σ = 43225587504. Its totient is φ = 4802843040.

The previous prime is 18010661419. The next prime is 18010661479. The reversal of 18010661430 is 3416601081.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 600355381 = 18010661430 / (1 + 8 + 0 + 1 + 0 + 6 + 6 + 1 + 4 + 3 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300177661 + ... + 300177720.

It is an arithmetic number, because the mean of its divisors is an integer number (2701599219).

Almost surely, 2^18010661430 is an apocalyptic number.

18010661430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18010661430 is an abundant number, since it is smaller than the sum of its proper divisors (25214926074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18010661430 is a wasteful number, since it uses less digits than its factorization.

18010661430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600355391.

The product of its (nonzero) digits is 3456, while the sum is 30.

The spelling of 18010661430 in words is "eighteen billion, ten million, six hundred sixty-one thousand, four hundred thirty".