18874377 has 20 divisors (see below), whose sum is σ = 28856080. Its totient is φ = 12288024.

The previous prime is 18874367. The next prime is 18874379. The reversal of 18874377 is 77347881.

It is a happy number.

18874377 is nontrivially palindromic in base 2 and base 8.

It is not a de Polignac number, because 18874377 - 2⁶ = 18874313 is a prime.

It is a Duffinian number.

It is a zygodrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (18874379) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 774 + ... + 6192.

It is an arithmetic number, because the mean of its divisors is an integer number (1442804).

Almost surely, 2^18874377 is an apocalyptic number.

It is an amenable number.

18874377 is a deficient number, since it is larger than the sum of its proper divisors (9981703).

18874377 is an equidigital number, since it uses as much as digits as its factorization.

18874377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5474 (or 5465 counting only the distinct ones).

The product of its digits is 263424, while the sum is 45.

The square root of 18874377 is about 4344.4650994110. The cubic root of 18874377 is about 266.2507716701.

The spelling of 18874377 in words is "eighteen million, eight hundred seventy-four thousand, three hundred seventy-seven".