18373545 has 24 divisors (see below), whose sum is σ = 32877312. Its totient is φ = 9482400.

The previous prime is 18373517. The next prime is 18373547. The reversal of 18373545 is 54537381.

It is not a de Polignac number, because 18373545 - 2⁷ = 18373417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18373547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5191 + ... + 7980.

It is an arithmetic number, because the mean of its divisors is an integer number (1369888).

Almost surely, 2^18373545 is an apocalyptic number.

18373545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18373545 is a deficient number, since it is larger than the sum of its proper divisors (14503767).

18373545 is a wasteful number, since it uses less digits than its factorization.

18373545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13213 (or 13210 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 18373545 is about 4286.4373318643. The cubic root of 18373545 is about 263.8746391731.

The spelling of 18373545 in words is "eighteen million, three hundred seventy-three thousand, five hundred forty-five".