18074405 has 8 divisors (see below), whose sum is σ = 22193952. Its totient is φ = 14123088.

The previous prime is 18074369. The next prime is 18074411. The reversal of 18074405 is 50447081.

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 18074405 - 2⁶ = 18074341 is a prime.

It is a super-2 number, since 2×18074405² = 653368232208050, which contains 22 as substring.

It is a Duffinian number.

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, 41819 + ... + 42248.

It is an arithmetic number, because the mean of its divisors is an integer number (2774244).

Almost surely, 2^18074405 is an apocalyptic number.

It is an amenable number.

18074405 is a deficient number, since it is larger than the sum of its proper divisors (4119547).

18074405 is an equidigital number, since it uses as much as digits as its factorization.

18074405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84115.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 18074405 is about 4251.4003575293. The cubic root of 18074405 is about 262.4347471971.

It can be divided in two parts, 180 and 74405, that multiplied together give a triangular number (13392900 = T₅₁₇₅).

The spelling of 18074405 in words is "eighteen million, seventy-four thousand, four hundred five".