18494356 has 6 divisors (see below), whose sum is σ = 32365130. Its totient is φ = 9247176.

The previous prime is 18494347. The next prime is 18494363. The reversal of 18494356 is 65349481.

It can be written as a sum of positive squares in only one way, i.e., 18490000 + 4356 = 4300^2 + 66^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2311791 + ... + 2311798.

Almost surely, 2^18494356 is an apocalyptic number.

It is an amenable number.

18494356 is a deficient number, since it is larger than the sum of its proper divisors (13870774).

18494356 is a wasteful number, since it uses less digits than its factorization.

18494356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4623593 (or 4623591 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 18494356 is about 4300.5064817996. The cubic root of 18494356 is about 264.4517250910.

It can be divided in two parts, 1849 and 4356, that multiplied together give a square (8054244 = 2838²).

The spelling of 18494356 in words is "eighteen million, four hundred ninety-four thousand, three hundred fifty-six".