18900349 has 8 divisors (see below), whose sum is σ = 20828192. Its totient is φ = 17040240.

The previous prime is 18900347. The next prime is 18900361. The reversal of 18900349 is 94300981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18900349 - 2¹ = 18900347 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18900347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16347 + ... + 17464.

It is an arithmetic number, because the mean of its divisors is an integer number (2603524).

Almost surely, 2^18900349 is an apocalyptic number.

It is an amenable number.

18900349 is a deficient number, since it is larger than the sum of its proper divisors (1927843).

18900349 is a wasteful number, since it uses less digits than its factorization.

18900349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33867.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 18900349 is about 4347.4531624849. The cubic root of 18900349 is about 266.3728400815.

The spelling of 18900349 in words is "eighteen million, nine hundred thousand, three hundred forty-nine".