49789918 has 8 divisors (see below), whose sum is σ = 78615720. Its totient is φ = 23584680.

The previous prime is 49789913. The next prime is 49789931. The reversal of 49789918 is 81998794.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49789913) 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, 655093 + ... + 655168.

It is an arithmetic number, because the mean of its divisors is an integer number (9826965).

Almost surely, 2^49789918 is an apocalyptic number.

49789918 is a deficient number, since it is larger than the sum of its proper divisors (28825802).

49789918 is a wasteful number, since it uses less digits than its factorization.

49789918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310282.

The product of its digits is 1306368, while the sum is 55.

The square root of 49789918 is about 7056.1971344344. The cubic root of 49789918 is about 367.8864597348.

The spelling of 49789918 in words is "forty-nine million, seven hundred eighty-nine thousand, nine hundred eighteen".