18419012 has 6 divisors (see below), whose sum is σ = 32233278. Its totient is φ = 9209504.

The previous prime is 18418979. The next prime is 18419017. The reversal of 18419012 is 21091481.

It can be written as a sum of positive squares in only one way, i.e., 13293316 + 5125696 = 3646^2 + 2264^2 .

It is a super-2 number, since 2×18419012² = 678520006112288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18419017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2302373 + ... + 2302380.

It is an arithmetic number, because the mean of its divisors is an integer number (5372213).

Almost surely, 2^18419012 is an apocalyptic number.

It is an amenable number.

18419012 is a deficient number, since it is larger than the sum of its proper divisors (13814266).

18419012 is a wasteful number, since it uses less digits than its factorization.

18419012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4604757 (or 4604755 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 18419012 is about 4291.7376434260. The cubic root of 18419012 is about 264.0921204381.

The spelling of 18419012 in words is "eighteen million, four hundred nineteen thousand, twelve".