45918646 has 4 divisors (see below), whose sum is σ = 68877972. Its totient is φ = 22959322.

The previous prime is 45918643. The next prime is 45918661. The reversal of 45918646 is 64681954.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64681954 = 2 ⋅32340977.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45918643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11479660 + ... + 11479663.

It is an arithmetic number, because the mean of its divisors is an integer number (17219493).

Almost surely, 2^45918646 is an apocalyptic number.

45918646 is a deficient number, since it is larger than the sum of its proper divisors (22959326).

45918646 is a wasteful number, since it uses less digits than its factorization.

45918646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22959325.

The product of its digits is 207360, while the sum is 43.

The square root of 45918646 is about 6776.3298325864. The cubic root of 45918646 is about 358.0934339941.

It can be divided in two parts, 45918 and 646, that added together give a palindrome (46564).

The spelling of 45918646 in words is "forty-five million, nine hundred eighteen thousand, six hundred forty-six".