18253973 has 8 divisors (see below), whose sum is σ = 19491648. Its totient is φ = 17053344.

The previous prime is 18253957. The next prime is 18253993. The reversal of 18253973 is 37935281.

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

It is a cyclic number.

It is not a de Polignac number, because 18253973 - 2⁴ = 18253957 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 (18253943) 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, 8240 + ... + 10217.

It is an arithmetic number, because the mean of its divisors is an integer number (2436456).

Almost surely, 2^18253973 is an apocalyptic number.

It is an amenable number.

18253973 is a deficient number, since it is larger than the sum of its proper divisors (1237675).

18253973 is a wasteful number, since it uses less digits than its factorization.

18253973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18523.

The product of its digits is 45360, while the sum is 38.

The square root of 18253973 is about 4272.4668518316. The cubic root of 18253973 is about 263.3009753899.

The spelling of 18253973 in words is "eighteen million, two hundred fifty-three thousand, nine hundred seventy-three".