61738818 has 16 divisors (see below), whose sum is σ = 124677696. Its totient is φ = 20379600.

The previous prime is 61738813. The next prime is 61738819. The reversal of 61738818 is 81883716.

61738818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 61738818.

It is not an unprimeable number, because it can be changed into a prime (61738813) 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, 49333 + ... + 50568.

It is an arithmetic number, because the mean of its divisors is an integer number (7792356).

Almost surely, 2^61738818 is an apocalyptic number.

61738818 is an abundant number, since it is smaller than the sum of its proper divisors (62938878).

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

61738818 is a wasteful number, since it uses less digits than its factorization.

61738818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100009.

The product of its digits is 64512, while the sum is 42.

The square root of 61738818 is about 7857.4052969158. The cubic root of 61738818 is about 395.2326098813.

The spelling of 61738818 in words is "sixty-one million, seven hundred thirty-eight thousand, eight hundred eighteen".