18882397 has 8 divisors (see below), whose sum is σ = 19245600. Its totient is φ = 18522864.

The previous prime is 18882389. The next prime is 18882401. The reversal of 18882397 is 79328881.

18882397 = 179² + 180² + ... + 396².

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 18882397 - 2³ = 18882389 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 (18882307) 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, 10854 + ... + 12472.

It is an arithmetic number, because the mean of its divisors is an integer number (2405700).

Almost surely, 2^18882397 is an apocalyptic number.

It is an amenable number.

18882397 is a deficient number, since it is larger than the sum of its proper divisors (363203).

18882397 is a wasteful number, since it uses less digits than its factorization.

18882397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835.

The product of its digits is 193536, while the sum is 46.

The square root of 18882397 is about 4345.3880148958. The cubic root of 18882397 is about 266.2884776177.

It can be divided in two parts, 1888 and 2397, that multiplied together give a triangular number (4525536 = T₃₀₀₈).

The spelling of 18882397 in words is "eighteen million, eight hundred eighty-two thousand, three hundred ninety-seven".