8730961993 has 6 divisors (see below), whose sum is σ = 9454237134. Its totient is φ = 8059349376.

The previous prime is 8730961969. The next prime is 8730962027. The reversal of 8730961993 is 3991690378.

It can be written as a sum of positive squares in 3 ways, for example, as 236021769 + 8494940224 = 15363^2 + 92168^2 .

It is not a de Polignac number, because 8730961993 - 2²⁵ = 8697407561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8730961933) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25831080 + ... + 25831417.

It is an arithmetic number, because the mean of its divisors is an integer number (1575706189).

Almost surely, 2^8730961993 is an apocalyptic number.

It is an amenable number.

8730961993 is a deficient number, since it is larger than the sum of its proper divisors (723275141).

8730961993 is a wasteful number, since it uses less digits than its factorization.

8730961993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51662523 (or 51662510 counting only the distinct ones).

The product of its (nonzero) digits is 2204496, while the sum is 55.

The square root of 8730961993 is about 93439.6168281955. The cubic root of 8730961993 is about 2059.1470683474.

The spelling of 8730961993 in words is "eight billion, seven hundred thirty million, nine hundred sixty-one thousand, nine hundred ninety-three".