45381618 has 24 divisors (see below), whose sum is σ = 99676668. Its totient is φ = 14919552.

The previous prime is 45381593. The next prime is 45381631. The reversal of 45381618 is 81618354.

45381618 is a `hidden beast` number, since 4 + 5 + 38 + 1 + 618 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 44395569 + 986049 = 6663^2 + 993^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15955 + ... + 18582.

Almost surely, 2^45381618 is an apocalyptic number.

45381618 is an abundant number, since it is smaller than the sum of its proper divisors (54295050).

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

45381618 is a wasteful number, since it uses less digits than its factorization.

45381618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34618 (or 34615 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 45381618 is about 6736.5880087771. The cubic root of 45381618 is about 356.6919641222.

The spelling of 45381618 in words is "forty-five million, three hundred eighty-one thousand, six hundred eighteen".