18491064 has 32 divisors (see below), whose sum is σ = 47103120. Its totient is φ = 6046976.

The previous prime is 18491051. The next prime is 18491071. The reversal of 18491064 is 46019481.

It is a super-3 number, since 3×18491064³ (a number of 23 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 5997 + ... + 8540.

Almost surely, 2^18491064 is an apocalyptic number.

It is an amenable number.

18491064 is an abundant number, since it is smaller than the sum of its proper divisors (28612056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18491064 is a wasteful number, since it uses less digits than its factorization.

18491064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14599 (or 14595 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 18491064 is about 4300.1237191504. The cubic root of 18491064 is about 264.4360333355.

The spelling of 18491064 in words is "eighteen million, four hundred ninety-one thousand, sixty-four".