45185983 has 4 divisors (see below), whose sum is σ = 47844000. Its totient is φ = 42527968.

The previous prime is 45185963. The next prime is 45185989. The reversal of 45185983 is 38958154.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38958154 = 2 ⋅19479077.

It is a cyclic number.

It is not a de Polignac number, because 45185983 - 2¹³ = 45177791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45185989) 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, 1328983 + ... + 1329016.

It is an arithmetic number, because the mean of its divisors is an integer number (11961000).

Almost surely, 2^45185983 is an apocalyptic number.

45185983 is a deficient number, since it is larger than the sum of its proper divisors (2658017).

45185983 is a wasteful number, since it uses less digits than its factorization.

45185983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2658016.

The product of its digits is 172800, while the sum is 43.

The square root of 45185983 is about 6722.0519932533. The cubic root of 45185983 is about 356.1786729880.

It can be divided in two parts, 4518 and 5983, that added together give a palindrome (10501).

The spelling of 45185983 in words is "forty-five million, one hundred eighty-five thousand, nine hundred eighty-three".