49693918 has 4 divisors (see below), whose sum is σ = 74540880. Its totient is φ = 24846958.

The previous prime is 49693901. The next prime is 49693979. The reversal of 49693918 is 81939694.

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

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 12423478 + ... + 12423481.

It is an arithmetic number, because the mean of its divisors is an integer number (18635220).

Almost surely, 2^49693918 is an apocalyptic number.

49693918 is a deficient number, since it is larger than the sum of its proper divisors (24846962).

49693918 is a wasteful number, since it uses less digits than its factorization.

49693918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24846961.

The product of its digits is 419904, while the sum is 49.

The square root of 49693918 is about 7049.3913212419. The cubic root of 49693918 is about 367.6498668380.

The spelling of 49693918 in words is "forty-nine million, six hundred ninety-three thousand, nine hundred eighteen".