18402950 has 12 divisors (see below), whose sum is σ = 34229580. Its totient is φ = 7361160.

The previous prime is 18402947. The next prime is 18402961. The reversal of 18402950 is 5920481.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 183980 + ... + 184079.

It is an arithmetic number, because the mean of its divisors is an integer number (2852465).

Almost surely, 2^18402950 is an apocalyptic number.

18402950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18402950 is a deficient number, since it is larger than the sum of its proper divisors (15826630).

18402950 is a wasteful number, since it uses less digits than its factorization.

18402950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368071 (or 368066 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 18402950 is about 4289.8659652721. The cubic root of 18402950 is about 264.0153323663.

The spelling of 18402950 in words is "eighteen million, four hundred two thousand, nine hundred fifty".