18834489 has 6 divisors (see below), whose sum is σ = 27205386. Its totient is φ = 12556320.

The previous prime is 18834467. The next prime is 18834509. The reversal of 18834489 is 98443881.

It can be written as a sum of positive squares in only one way, i.e., 18558864 + 275625 = 4308^2 + 525^2 .

It is not a de Polignac number, because 18834489 - 2¹¹ = 18832441 is a prime.

It is a super-2 number, since 2×18834489² = 709475951782242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18835489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1046352 + ... + 1046369.

It is an arithmetic number, because the mean of its divisors is an integer number (4534231).

Almost surely, 2^18834489 is an apocalyptic number.

It is an amenable number.

18834489 is a deficient number, since it is larger than the sum of its proper divisors (8370897).

18834489 is a wasteful number, since it uses less digits than its factorization.

18834489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092727 (or 2092724 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 18834489 is about 4339.8720027208. The cubic root of 18834489 is about 266.0630798069.

The spelling of 18834489 in words is "eighteen million, eight hundred thirty-four thousand, four hundred eighty-nine".