18190332 has 60 divisors (see below), whose sum is σ = 49640976. Its totient is φ = 5797440.

The previous prime is 18190327. The next prime is 18190343. The reversal of 18190332 is 23309181.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 18190296 and 18190305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6232 + ... + 8672.

Almost surely, 2^18190332 is an apocalyptic number.

18190332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18190332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24820488).

18190332 is an abundant number, since it is smaller than the sum of its proper divisors (31450644).

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

18190332 is a wasteful number, since it uses less digits than its factorization.

18190332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2480 (or 2469 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 18190332 is about 4265.0125439440. The cubic root of 18190332 is about 262.9946265775.

The spelling of 18190332 in words is "eighteen million, one hundred ninety thousand, three hundred thirty-two".