49161816 has 192 divisors, whose sum is σ = 159868800. Its totient is φ = 14113440.

The previous prime is 49161799. The next prime is 49161821. The reversal of 49161816 is 61816194.

It is a happy number.

49161816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2587455 + ... + 2587473.

It is an arithmetic number, because the mean of its divisors is an integer number (832650).

Almost surely, 2^49161816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49161816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79934400).

49161816 is an abundant number, since it is smaller than the sum of its proper divisors (110706984).

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

49161816 is a wasteful number, since it uses less digits than its factorization.

49161816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73 (or 35 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 49161816 is about 7011.5487590118. The cubic root of 49161816 is about 366.3329407922.

The spelling of 49161816 in words is "forty-nine million, one hundred sixty-one thousand, eight hundred sixteen".