73844249390 has 16 divisors (see below), whose sum is σ = 133091615808. Its totient is φ = 29499484896.

The previous prime is 73844249387. The next prime is 73844249431. The reversal of 73844249390 is 9394244837.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4768742 + ... + 4784201.

It is an arithmetic number, because the mean of its divisors is an integer number (8318225988).

Almost surely, 2^73844249390 is an apocalyptic number.

73844249390 is a deficient number, since it is larger than the sum of its proper divisors (59247366418).

73844249390 is a wasteful number, since it uses less digits than its factorization.

73844249390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9553723.

The product of its (nonzero) digits is 5225472, while the sum is 53.

The spelling of 73844249390 in words is "seventy-three billion, eight hundred forty-four million, two hundred forty-nine thousand, three hundred ninety".