18041020351 has 4 divisors (see below), whose sum is σ = 18043590400. Its totient is φ = 18038450304.

The previous prime is 18041020343. The next prime is 18041020357. The reversal of 18041020351 is 15302014081.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18041020351 - 2³ = 18041020343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18041020357) 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, 1274466 + ... + 1288543.

It is an arithmetic number, because the mean of its divisors is an integer number (4510897600).

Almost surely, 2^18041020351 is an apocalyptic number.

18041020351 is a deficient number, since it is larger than the sum of its proper divisors (2570049).

18041020351 is an equidigital number, since it uses as much as digits as its factorization.

18041020351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570048.

The product of its (nonzero) digits is 960, while the sum is 25.

The spelling of 18041020351 in words is "eighteen billion, forty-one million, twenty thousand, three hundred fifty-one".