18140451730 has 8 divisors (see below), whose sum is σ = 32652813132. Its totient is φ = 7256180688.

The previous prime is 18140451689. The next prime is 18140451757. The reversal of 18140451730 is 3715404181.

It can be written as a sum of positive squares in 2 ways, for example, as 18112583889 + 27867841 = 134583^2 + 5279^2 .

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, 907022577 + ... + 907022596.

Almost surely, 2^18140451730 is an apocalyptic number.

18140451730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18140451730 is a deficient number, since it is larger than the sum of its proper divisors (14512361402).

18140451730 is a wasteful number, since it uses less digits than its factorization.

18140451730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1814045180.

The product of its (nonzero) digits is 13440, while the sum is 34.

The spelling of 18140451730 in words is "eighteen billion, one hundred forty million, four hundred fifty-one thousand, seven hundred thirty".