18074378 has 16 divisors (see below), whose sum is σ = 31570560. Its totient is φ = 7599696.

The previous prime is 18074369. The next prime is 18074411. The reversal of 18074378 is 87347081.

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 in 7 ways as a sum of consecutive naturals, for example, 11438 + ... + 12921.

It is an arithmetic number, because the mean of its divisors is an integer number (1973160).

Almost surely, 2^18074378 is an apocalyptic number.

18074378 is a deficient number, since it is larger than the sum of its proper divisors (13496182).

18074378 is a wasteful number, since it uses less digits than its factorization.

18074378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24421.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 18074378 is about 4251.3971821038. The cubic root of 18074378 is about 262.4346165199.

The spelling of 18074378 in words is "eighteen million, seventy-four thousand, three hundred seventy-eight".