49685118 has 48 divisors (see below), whose sum is σ = 122405904. Its totient is φ = 13359360.

The previous prime is 49685113. The next prime is 49685147. The reversal of 49685118 is 81158694.

49685118 is nontrivially palindromic in base 4.

It is a super-2 number, since 2×49685118² = 4937221901347848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 49685118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49685113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28 + ... + 9968.

It is an arithmetic number, because the mean of its divisors is an integer number (2550123).

Almost surely, 2^49685118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49685118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61202952).

49685118 is an abundant number, since it is smaller than the sum of its proper divisors (72720786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49685118 is a wasteful number, since it uses less digits than its factorization.

49685118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9977 (or 9970 counting only the distinct ones).

The product of its digits is 69120, while the sum is 42.

The square root of 49685118 is about 7048.7671262427. The cubic root of 49685118 is about 367.6281639150.

The spelling of 49685118 in words is "forty-nine million, six hundred eighty-five thousand, one hundred eighteen".