18393141 has 8 divisors (see below), whose sum is σ = 26410720. Its totient is φ = 11318832.

The previous prime is 18393131. The next prime is 18393157. The reversal of 18393141 is 14139381.

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

It is not a de Polignac number, because 18393141 - 2⁹ = 18392629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18393099 and 18393108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18393101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235771 + ... + 235848.

It is an arithmetic number, because the mean of its divisors is an integer number (3301340).

Almost surely, 2^18393141 is an apocalyptic number.

It is an amenable number.

18393141 is a deficient number, since it is larger than the sum of its proper divisors (8017579).

18393141 is a wasteful number, since it uses less digits than its factorization.

18393141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471635.

The product of its digits is 2592, while the sum is 30.

The square root of 18393141 is about 4288.7225370732. The cubic root of 18393141 is about 263.9684162170.

The spelling of 18393141 in words is "eighteen million, three hundred ninety-three thousand, one hundred forty-one".