18534950 has 24 divisors (see below), whose sum is σ = 39400752. Its totient is φ = 6354720.

The previous prime is 18534889. The next prime is 18534959. The reversal of 18534950 is 5943581.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 18534950.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18534959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26129 + ... + 26828.

It is an arithmetic number, because the mean of its divisors is an integer number (1641698).

Almost surely, 2^18534950 is an apocalyptic number.

18534950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18534950 is an abundant number, since it is smaller than the sum of its proper divisors (20865802).

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

18534950 is a wasteful number, since it uses less digits than its factorization.

18534950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52976 (or 52971 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 18534950 is about 4305.2235714304. The cubic root of 18534950 is about 264.6450689153.

The spelling of 18534950 in words is "eighteen million, five hundred thirty-four thousand, nine hundred fifty".