18150740 has 24 divisors (see below), whose sum is σ = 38230920. Its totient is φ = 7238528.

The previous prime is 18150739. The next prime is 18150787. The reversal of 18150740 is 4705181.

It can be written as a sum of positive squares in 4 ways, for example, as 190096 + 17960644 = 436^2 + 4238^2 .

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, 6614 + ... + 8946.

It is an arithmetic number, because the mean of its divisors is an integer number (1592955).

Almost surely, 2^18150740 is an apocalyptic number.

18150740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18150740 is an abundant number, since it is smaller than the sum of its proper divisors (20080180).

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

18150740 is a wasteful number, since it uses less digits than its factorization.

18150740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2731 (or 2729 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 18150740 is about 4260.3685286604. The cubic root of 18150740 is about 262.8036817979.

The spelling of 18150740 in words is "eighteen million, one hundred fifty thousand, seven hundred forty".