18253950 has 192 divisors, whose sum is σ = 56996352. Its totient is φ = 3801600.

The previous prime is 18253943. The next prime is 18253957. The reversal of 18253950 is 5935281.

It is an interprime number because it is at equal distance from previous prime (18253943) and next prime (18253957).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent 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 95 ways as a sum of consecutive naturals, for example, 493332 + ... + 493368.

It is an arithmetic number, because the mean of its divisors is an integer number (296856).

Almost surely, 2^18253950 is an apocalyptic number.

18253950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18253950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28498176).

18253950 is an abundant number, since it is smaller than the sum of its proper divisors (38742402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18253950 is a wasteful number, since it uses less digits than its factorization.

18253950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 18253950 is about 4272.4641601774. The cubic root of 18253950 is about 263.3008648035.

It can be divided in two parts, 1825 and 3950, that added together give a palindrome (5775).

The spelling of 18253950 in words is "eighteen million, two hundred fifty-three thousand, nine hundred fifty".