73801913 has 8 divisors (see below), whose sum is σ = 78543432. Its totient is φ = 69104896.

The previous prime is 73801901. The next prime is 73801921. The reversal of 73801913 is 31910837.

It can be written as a sum of positive squares in 4 ways, for example, as 26081449 + 47720464 = 5107^2 + 6908^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73801913 - 2⁸ = 73801657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73801913.

It is not an unprimeable number, because it can be changed into a prime (73801933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7670 + ... + 14367.

It is an arithmetic number, because the mean of its divisors is an integer number (9817929).

Almost surely, 2^73801913 is an apocalyptic number.

It is an amenable number.

73801913 is a deficient number, since it is larger than the sum of its proper divisors (4741519).

73801913 is a wasteful number, since it uses less digits than its factorization.

73801913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22251.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 73801913 is about 8590.8039786739. The cubic root of 73801913 is about 419.4586998701.

The spelling of 73801913 in words is "seventy-three million, eight hundred one thousand, nine hundred thirteen".