45018389 has 6 divisors (see below), whose sum is σ = 48747906. Its totient is φ = 41555280.

The previous prime is 45018373. The next prime is 45018419. The reversal of 45018389 is 98381054.

It can be written as a sum of positive squares in 3 ways, for example, as 4695889 + 40322500 = 2167^2 + 6350^2 .

It is not a de Polignac number, because 45018389 - 2⁴ = 45018373 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45018319) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 133022 + ... + 133359.

It is an arithmetic number, because the mean of its divisors is an integer number (8124651).

Almost surely, 2^45018389 is an apocalyptic number.

It is an amenable number.

45018389 is a deficient number, since it is larger than the sum of its proper divisors (3729517).

45018389 is a wasteful number, since it uses less digits than its factorization.

45018389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266407 (or 266394 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 45018389 is about 6709.5744276370. The cubic root of 45018389 is about 355.7377740072.

The spelling of 45018389 in words is "forty-five million, eighteen thousand, three hundred eighty-nine".