18142022730 has 32 divisors (see below), whose sum is σ = 46890152064. Its totient is φ = 4465728576.

The previous prime is 18142022671. The next prime is 18142022747. The reversal of 18142022730 is 3722024181.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23258614 + ... + 23259393.

It is an arithmetic number, because the mean of its divisors is an integer number (1465317252).

Almost surely, 2^18142022730 is an apocalyptic number.

18142022730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18142022730 is an abundant number, since it is smaller than the sum of its proper divisors (28748129334).

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

18142022730 is a wasteful number, since it uses less digits than its factorization.

18142022730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46518030.

The product of its (nonzero) digits is 5376, while the sum is 30.

The spelling of 18142022730 in words is "eighteen billion, one hundred forty-two million, twenty-two thousand, seven hundred thirty".