73790009738 has 4 divisors (see below), whose sum is σ = 110685014610. Its totient is φ = 36895004868.

The previous prime is 73790009707. The next prime is 73790009747. The reversal of 73790009738 is 83790009737.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 73025874289 + 764135449 = 270233^2 + 27643^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 73790009738.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18447502433 + ... + 18447502436.

Almost surely, 2^73790009738 is an apocalyptic number.

73790009738 is a deficient number, since it is larger than the sum of its proper divisors (36895004872).

73790009738 is a wasteful number, since it uses less digits than its factorization.

73790009738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36895004871.

The product of its (nonzero) digits is 2000376, while the sum is 53.

Subtracting 73790009738 from its reverse (83790009737), we obtain a palindrome (9999999999).

The spelling of 73790009738 in words is "seventy-three billion, seven hundred ninety million, nine thousand, seven hundred thirty-eight".