18750413 has 8 divisors (see below), whose sum is σ = 20714880. Its totient is φ = 16829280.

The previous prime is 18750383. The next prime is 18750421. The reversal of 18750413 is 31405781.

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 18750413 - 2⁶ = 18750349 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 (18750493) 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, 9920 + ... + 11657.

It is an arithmetic number, because the mean of its divisors is an integer number (2589360).

Almost surely, 2^18750413 is an apocalyptic number.

It is an amenable number.

18750413 is a deficient number, since it is larger than the sum of its proper divisors (1964467).

18750413 is a wasteful number, since it uses less digits than its factorization.

18750413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21667.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 18750413 is about 4330.1747077918. The cubic root of 18750413 is about 265.6665928502. Note that the first 3 decimals are identical.

The spelling of 18750413 in words is "eighteen million, seven hundred fifty thousand, four hundred thirteen".