18877245 has 8 divisors (see below), whose sum is σ = 30203616. Its totient is φ = 10067856.

The previous prime is 18877223. The next prime is 18877247. The reversal of 18877245 is 54277881.

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

It is not a de Polignac number, because 18877245 - 2⁹ = 18876733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18877197 and 18877206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18877247) 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, 629227 + ... + 629256.

It is an arithmetic number, because the mean of its divisors is an integer number (3775452).

Almost surely, 2^18877245 is an apocalyptic number.

18877245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18877245 is a deficient number, since it is larger than the sum of its proper divisors (11326371).

18877245 is a wasteful number, since it uses less digits than its factorization.

18877245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258491.

The product of its digits is 125440, while the sum is 42.

The square root of 18877245 is about 4344.7951620301. The cubic root of 18877245 is about 266.2642567693.

The spelling of 18877245 in words is "eighteen million, eight hundred seventy-seven thousand, two hundred forty-five".