18749379 has 8 divisors (see below), whose sum is σ = 27271872. Its totient is φ = 11363240.

The previous prime is 18749377. The next prime is 18749429. The reversal of 18749379 is 97394781.

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 18749379 - 2¹ = 18749377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18749377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284049 + ... + 284114.

It is an arithmetic number, because the mean of its divisors is an integer number (3408984).

Almost surely, 2^18749379 is an apocalyptic number.

18749379 is a deficient number, since it is larger than the sum of its proper divisors (8522493).

18749379 is a wasteful number, since it uses less digits than its factorization.

18749379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568177.

The product of its digits is 381024, while the sum is 48.

The square root of 18749379 is about 4330.0553114250. The cubic root of 18749379 is about 265.6617093256.

The spelling of 18749379 in words is "eighteen million, seven hundred forty-nine thousand, three hundred seventy-nine".