1518225408 has 324 divisors, whose sum is σ = 5228262585. Its totient is φ = 423198720.

The previous prime is 1518225407. The next prime is 1518225451. The reversal of 1518225408 is 8045228151.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

1518225408 is a `hidden beast` number, since 15 + 18 + 225 + 408 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1084253184 + 433972224 = 32928^2 + 20832^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=27552.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1518225407) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 37029868 + ... + 37029908.

Almost surely, 2^1518225408 is an apocalyptic number.

1518225408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1518225408

1518225408 is an abundant number, since it is smaller than the sum of its proper divisors (3710037177).

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

1518225408 is an equidigital number, since it uses as much as digits as its factorization.

1518225408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 36.

The square root of 1518225408 is about 38964.4120705035. The cubic root of 1518225408 is about 1149.3317877371.

The spelling of 1518225408 in words is "one billion, five hundred eighteen million, two hundred twenty-five thousand, four hundred eight".