18893045 has 8 divisors (see below), whose sum is σ = 22702680. Its totient is φ = 15093760.

The previous prime is 18893033. The next prime is 18893053. The reversal of 18893045 is 54039881.

It can be written as a sum of positive squares in 4 ways, for example, as 3076516 + 15816529 = 1754^2 + 3977^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18893045 - 2¹² = 18888949 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2261 + ... + 6549.

It is an arithmetic number, because the mean of its divisors is an integer number (2837835).

Almost surely, 2^18893045 is an apocalyptic number.

It is an amenable number.

18893045 is a deficient number, since it is larger than the sum of its proper divisors (3809635).

18893045 is an equidigital number, since it uses as much as digits as its factorization.

18893045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5175.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 18893045 is about 4346.6130492603. The cubic root of 18893045 is about 266.3385225864.

The spelling of 18893045 in words is "eighteen million, eight hundred ninety-three thousand, forty-five".