18253955 has 4 divisors (see below), whose sum is σ = 21904752. Its totient is φ = 14603160.

The previous prime is 18253943. The next prime is 18253957. The reversal of 18253955 is 55935281.

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

It is not a de Polignac number, because 18253955 - 2⁶ = 18253891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18253957) 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, 1825391 + ... + 1825400.

It is an arithmetic number, because the mean of its divisors is an integer number (5476188).

Almost surely, 2^18253955 is an apocalyptic number.

18253955 is a deficient number, since it is larger than the sum of its proper divisors (3650797).

18253955 is an equidigital number, since it uses as much as digits as its factorization.

18253955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3650796.

The product of its digits is 54000, while the sum is 38.

The square root of 18253955 is about 4272.4647453197. The cubic root of 18253955 is about 263.3008888440.

The spelling of 18253955 in words is "eighteen million, two hundred fifty-three thousand, nine hundred fifty-five".