45237638 has 4 divisors (see below), whose sum is σ = 67856460. Its totient is φ = 22618818.

The previous prime is 45237631. The next prime is 45237653. The reversal of 45237638 is 83673254.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45237631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11309408 + ... + 11309411.

It is an arithmetic number, because the mean of its divisors is an integer number (16964115).

Almost surely, 2^45237638 is an apocalyptic number.

45237638 is a deficient number, since it is larger than the sum of its proper divisors (22618822).

45237638 is a wasteful number, since it uses less digits than its factorization.

45237638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22618821.

The product of its digits is 120960, while the sum is 38.

The square root of 45237638 is about 6725.8931005481. The cubic root of 45237638 is about 356.3143448769.

The spelling of 45237638 in words is "forty-five million, two hundred thirty-seven thousand, six hundred thirty-eight".