18141955 has 16 divisors (see below), whose sum is σ = 23748480. Its totient is φ = 13223808.

The previous prime is 18141947. The next prime is 18141971. The reversal of 18141955 is 55914181.

It is not a de Polignac number, because 18141955 - 2³ = 18141947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18141955.

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, 3369 + ... + 6901.

It is an arithmetic number, because the mean of its divisors is an integer number (1484280).

Almost surely, 2^18141955 is an apocalyptic number.

18141955 is a deficient number, since it is larger than the sum of its proper divisors (5606525).

18141955 is a wasteful number, since it uses less digits than its factorization.

18141955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3630.

The product of its digits is 7200, while the sum is 34.

The square root of 18141955 is about 4259.3373897826. The cubic root of 18141955 is about 262.7612757597.

The spelling of 18141955 in words is "eighteen million, one hundred forty-one thousand, nine hundred fifty-five".