45431118 has 80 divisors (see below), whose sum is σ = 108203040. Its totient is φ = 14217984.

The previous prime is 45431117. The next prime is 45431119. The reversal of 45431118 is 81113454.

It is a happy number.

45431118 is a `hidden beast` number, since 4 + 543 + 1 + 118 = 666.

It is an interprime number because it is at equal distance from previous prime (45431117) and next prime (45431119).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 45431091 and 45431100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45431117) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 331546 + ... + 331682.

It is an arithmetic number, because the mean of its divisors is an integer number (1352538).

Almost surely, 2^45431118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45431118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54101520).

45431118 is an abundant number, since it is smaller than the sum of its proper divisors (62771922).

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

45431118 is a wasteful number, since it uses less digits than its factorization.

45431118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 254 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 45431118 is about 6740.2609741760. The cubic root of 45431118 is about 356.8216042523.

The spelling of 45431118 in words is "forty-five million, four hundred thirty-one thousand, one hundred eighteen".