61738138 has 24 divisors (see below), whose sum is σ = 117522144. Its totient is φ = 24053400.

The previous prime is 61738133. The next prime is 61738147. The reversal of 61738138 is 83183716.

61738138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 61738097 and 61738106.

It is not an unprimeable number, because it can be changed into a prime (61738133) 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 11 ways as a sum of consecutive naturals, for example, 27558 + ... + 29713.

It is an arithmetic number, because the mean of its divisors is an integer number (4896756).

Almost surely, 2^61738138 is an apocalyptic number.

61738138 is a deficient number, since it is larger than the sum of its proper divisors (55784006).

61738138 is a wasteful number, since it uses less digits than its factorization.

61738138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57298 (or 57291 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 61738138 is about 7857.3620255147. The cubic root of 61738138 is about 395.2311588269.

The spelling of 61738138 in words is "sixty-one million, seven hundred thirty-eight thousand, one hundred thirty-eight".