45189774 has 96 divisors (see below), whose sum is σ = 120519360. Its totient is φ = 11985408.

The previous prime is 45189773. The next prime is 45189797. The reversal of 45189774 is 47798154.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45189773) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 619002 + ... + 619074.

It is an arithmetic number, because the mean of its divisors is an integer number (1255410).

Almost surely, 2^45189774 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45189774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60259680).

45189774 is an abundant number, since it is smaller than the sum of its proper divisors (75329586).

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

45189774 is a wasteful number, since it uses less digits than its factorization.

45189774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 102 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 45189774 is about 6722.3339696864. Note that the first 3 decimals coincide. The cubic root of 45189774 is about 356.1886335665.

The spelling of 45189774 in words is "forty-five million, one hundred eighty-nine thousand, seven hundred seventy-four".