18361245 has 32 divisors (see below), whose sum is σ = 35039232. Its totient is φ = 8027712.

The previous prime is 18361243. The next prime is 18361247. The reversal of 18361245 is 54216381.

It is an interprime number because it is at equal distance from previous prime (18361243) and next prime (18361247).

It is not a de Polignac number, because 18361245 - 2¹ = 18361243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18361243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1387 + ... + 6216.

It is an arithmetic number, because the mean of its divisors is an integer number (1094976).

Almost surely, 2^18361245 is an apocalyptic number.

18361245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18361245 is a deficient number, since it is larger than the sum of its proper divisors (16677987).

18361245 is a wasteful number, since it uses less digits than its factorization.

18361245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7641.

The product of its digits is 5760, while the sum is 30.

The square root of 18361245 is about 4285.0023337217. The cubic root of 18361245 is about 263.8157432153.

It can be divided in two parts, 1836 and 1245, that added together give a triangular number (3081 = T₇₈).

The spelling of 18361245 in words is "eighteen million, three hundred sixty-one thousand, two hundred forty-five".