45809138 has 8 divisors (see below), whose sum is σ = 68746332. Its totient is φ = 22893696.

The previous prime is 45809131. The next prime is 45809149. The reversal of 45809138 is 83190854.

It can be written as a sum of positive squares in 2 ways, for example, as 45064369 + 744769 = 6713^2 + 863^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (45809131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1706 + ... + 9722.

Almost surely, 2^45809138 is an apocalyptic number.

45809138 is a deficient number, since it is larger than the sum of its proper divisors (22937194).

45809138 is a wasteful number, since it uses less digits than its factorization.

45809138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10876.

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

The square root of 45809138 is about 6768.2448241771. The cubic root of 45809138 is about 357.8085438424.

The spelling of 45809138 in words is "forty-five million, eight hundred nine thousand, one hundred thirty-eight".