18996145 has 8 divisors (see below), whose sum is σ = 26051904. Its totient is φ = 13025904.

The previous prime is 18996097. The next prime is 18996151. The reversal of 18996145 is 54169981.

18996145 = T₃₁₆ + T₃₁₇ + ... + T₅₂₅.

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

It is a cyclic number.

It is not a de Polignac number, because 18996145 - 2⁹ = 18995633 is a prime.

It is a super-2 number, since 2×18996145² = 721707049722050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 271339 + ... + 271408.

It is an arithmetic number, because the mean of its divisors is an integer number (3256488).

Almost surely, 2^18996145 is an apocalyptic number.

It is an amenable number.

18996145 is a deficient number, since it is larger than the sum of its proper divisors (7055759).

18996145 is an equidigital number, since it uses as much as digits as its factorization.

18996145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542759.

The product of its digits is 77760, while the sum is 43.

The square root of 18996145 is about 4358.4567222814. The cubic root of 18996145 is about 266.8221168298.

The spelling of 18996145 in words is "eighteen million, nine hundred ninety-six thousand, one hundred forty-five".