61138338 has 16 divisors (see below), whose sum is σ = 122531616. Its totient is φ = 20336960.

The previous prime is 61138327. The next prime is 61138367. The reversal of 61138338 is 83383116.

It is a happy number.

61138338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61138299 and 61138308.

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 7 ways as a sum of consecutive naturals, for example, 7431 + ... + 13322.

It is an arithmetic number, because the mean of its divisors is an integer number (7658226).

Almost surely, 2^61138338 is an apocalyptic number.

61138338 is an abundant number, since it is smaller than the sum of its proper divisors (61393278).

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

61138338 is a wasteful number, since it uses less digits than its factorization.

61138338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21249.

The product of its digits is 10368, while the sum is 33.

The square root of 61138338 is about 7819.1008434474. The cubic root of 61138338 is about 393.9470713169.

The spelling of 61138338 in words is "sixty-one million, one hundred thirty-eight thousand, three hundred thirty-eight".