45943918 has 8 divisors (see below), whose sum is σ = 69160248. Its totient is φ = 22890504.

The previous prime is 45943913. The next prime is 45943943. The reversal of 45943918 is 81934954.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×45943918² = 4221687202381448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45943913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40021 + ... + 41152.

It is an arithmetic number, because the mean of its divisors is an integer number (8645031).

Almost surely, 2^45943918 is an apocalyptic number.

45943918 is a deficient number, since it is larger than the sum of its proper divisors (23216330).

45943918 is a wasteful number, since it uses less digits than its factorization.

45943918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81458.

The product of its digits is 155520, while the sum is 43.

The square root of 45943918 is about 6778.1943023198. The cubic root of 45943918 is about 358.1591159363.

The spelling of 45943918 in words is "forty-five million, nine hundred forty-three thousand, nine hundred eighteen".