18379801 has 4 divisors (see below), whose sum is σ = 20050704. Its totient is φ = 16708900.

The previous prime is 18379799. The next prime is 18379811. The reversal of 18379801 is 10897381.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18379801 - 2¹ = 18379799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18379811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 835435 + ... + 835456.

It is an arithmetic number, because the mean of its divisors is an integer number (5012676).

Almost surely, 2^18379801 is an apocalyptic number.

18379801 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18379801 is a deficient number, since it is larger than the sum of its proper divisors (1670903).

18379801 is a wasteful number, since it uses less digits than its factorization.

18379801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670902.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 18379801 is about 4287.1670133084. The cubic root of 18379801 is about 263.9045846267.

The spelling of 18379801 in words is "eighteen million, three hundred seventy-nine thousand, eight hundred one".