45731438 has 4 divisors (see below), whose sum is σ = 68597160. Its totient is φ = 22865718.

The previous prime is 45731419. The next prime is 45731449. The reversal of 45731438 is 83413754.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83413754 = 2 ⋅41706877.

It is a junction number, because it is equal to n+sod(n) for n = 45731398 and 45731407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11432858 + ... + 11432861.

It is an arithmetic number, because the mean of its divisors is an integer number (17149290).

Almost surely, 2^45731438 is an apocalyptic number.

45731438 is a deficient number, since it is larger than the sum of its proper divisors (22865722).

45731438 is a wasteful number, since it uses less digits than its factorization.

45731438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22865721.

The product of its digits is 40320, while the sum is 35.

The square root of 45731438 is about 6762.5023475042. The cubic root of 45731438 is about 357.6061282059.

The spelling of 45731438 in words is "forty-five million, seven hundred thirty-one thousand, four hundred thirty-eight".