61121838 has 16 divisors (see below), whose sum is σ = 122469840. Its totient is φ = 20336256.

The previous prime is 61121831. The next prime is 61121839. The reversal of 61121838 is 83812116.

61121838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61121831) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5803 + ... + 12486.

It is an arithmetic number, because the mean of its divisors is an integer number (7654365).

Almost surely, 2^61121838 is an apocalyptic number.

61121838 is an abundant number, since it is smaller than the sum of its proper divisors (61348002).

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

61121838 is a wasteful number, since it uses less digits than its factorization.

61121838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18851.

The product of its digits is 2304, while the sum is 30.

The square root of 61121838 is about 7818.0456637193. The cubic root of 61121838 is about 393.9116286812.

The spelling of 61121838 in words is "sixty-one million, one hundred twenty-one thousand, eight hundred thirty-eight".