18411953 has 16 divisors (see below), whose sum is σ = 21648000. Its totient is φ = 15334272.

The previous prime is 18411947. The next prime is 18411961. The reversal of 18411953 is 35911481.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18411953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18411553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44813 + ... + 45221.

It is an arithmetic number, because the mean of its divisors is an integer number (1353000).

Almost surely, 2^18411953 is an apocalyptic number.

It is an amenable number.

18411953 is a deficient number, since it is larger than the sum of its proper divisors (3236047).

18411953 is a wasteful number, since it uses less digits than its factorization.

18411953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584.

The product of its digits is 4320, while the sum is 32.

The square root of 18411953 is about 4290.9151704502. The cubic root of 18411953 is about 264.0583787716.

The spelling of 18411953 in words is "eighteen million, four hundred eleven thousand, nine hundred fifty-three".