993243854290 has 16 divisors (see below), whose sum is σ = 1793478813912. Its totient is φ = 396044235904.

The previous prime is 993243854279. The next prime is 993243854297. The reversal of 993243854290 is 92458342399.

It can be written as a sum of positive squares in 4 ways, for example, as 226405624041 + 766838230249 = 475821^2 + 875693^2 .

It is not an unprimeable number, because it can be changed into a prime (993243854297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156659899 + ... + 156666238.

Almost surely, 2^993243854290 is an apocalyptic number.

993243854290 is a deficient number, since it is larger than the sum of its proper divisors (800234959622).

993243854290 is a wasteful number, since it uses less digits than its factorization.

993243854290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313326461.

The product of its (nonzero) digits is 16796160, while the sum is 58.

The spelling of 993243854290 in words is "nine hundred ninety-three billion, two hundred forty-three million, eight hundred fifty-four thousand, two hundred ninety".