18878283 has 12 divisors (see below), whose sum is σ = 27365520. Its totient is φ = 12540816.

The previous prime is 18878263. The next prime is 18878291. The reversal of 18878283 is 38287881.

It is a happy number.

It is not a de Polignac number, because 18878283 - 2¹³ = 18870091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18878203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 943 + ... + 6216.

It is an arithmetic number, because the mean of its divisors is an integer number (2280460).

Almost surely, 2^18878283 is an apocalyptic number.

18878283 is a deficient number, since it is larger than the sum of its proper divisors (8487237).

18878283 is a wasteful number, since it uses less digits than its factorization.

18878283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7458 (or 7455 counting only the distinct ones).

The product of its digits is 172032, while the sum is 45.

The square root of 18878283 is about 4344.9146136604. The cubic root of 18878283 is about 266.2691370229.

The spelling of 18878283 in words is "eighteen million, eight hundred seventy-eight thousand, two hundred eighty-three".