18453748 has 6 divisors (see below), whose sum is σ = 32294066. Its totient is φ = 9226872.

The previous prime is 18453739. The next prime is 18453761. The reversal of 18453748 is 84735481.

It can be written as a sum of positive squares in only one way, i.e., 13337104 + 5116644 = 3652^2 + 2262^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18453748.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2306715 + ... + 2306722.

Almost surely, 2^18453748 is an apocalyptic number.

It is an amenable number.

18453748 is a deficient number, since it is larger than the sum of its proper divisors (13840318).

18453748 is a wasteful number, since it uses less digits than its factorization.

18453748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4613441 (or 4613439 counting only the distinct ones).

The product of its digits is 107520, while the sum is 40.

The square root of 18453748 is about 4295.7825829527. The cubic root of 18453748 is about 264.2580313138.

The spelling of 18453748 in words is "eighteen million, four hundred fifty-three thousand, seven hundred forty-eight".