18949032 has 64 divisors (see below), whose sum is σ = 54081600. Its totient is φ = 6143040.

The previous prime is 18949031. The next prime is 18949039. The reversal of 18949032 is 23094981.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (18949031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6807 + ... + 9177.

It is an arithmetic number, because the mean of its divisors is an integer number (845025).

Almost surely, 2^18949032 is an apocalyptic number.

18949032 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 18949032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27040800).

18949032 is an abundant number, since it is smaller than the sum of its proper divisors (35132568).

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

18949032 is a wasteful number, since it uses less digits than its factorization.

18949032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2423 (or 2413 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 18949032 is about 4353.0485869101. The cubic root of 18949032 is about 266.6013492802.

The spelling of 18949032 in words is "eighteen million, nine hundred forty-nine thousand, thirty-two".