18495740 has 24 divisors (see below), whose sum is σ = 40886160. Its totient is φ = 7008768.

The previous prime is 18495709. The next prime is 18495761. The reversal of 18495740 is 4759481.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 18495694 and 18495703.

It is a congruent 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, 23957 + ... + 24716.

It is an arithmetic number, because the mean of its divisors is an integer number (1703590).

Almost surely, 2^18495740 is an apocalyptic number.

18495740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18495740 is an abundant number, since it is smaller than the sum of its proper divisors (22390420).

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

18495740 is a wasteful number, since it uses less digits than its factorization.

18495740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48701 (or 48699 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 18495740 is about 4300.6673900687. The cubic root of 18495740 is about 264.4583215549.

The spelling of 18495740 in words is "eighteen million, four hundred ninety-five thousand, seven hundred forty".