8731903493 has 2 divisors, whose sum is σ = 8731903494. Its totient is φ = 8731903492.

The previous prime is 8731903487. The next prime is 8731903501. The reversal of 8731903493 is 3943091378.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8452411969 + 279491524 = 91937^2 + 16718^2 .

It is a cyclic number.

It is not a de Polignac number, because 8731903493 - 2³² = 4436936197 is a prime.

It is a super-2 number, since 2×8731903493² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8731903423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4365951746 + 4365951747.

It is an arithmetic number, because the mean of its divisors is an integer number (4365951747).

Almost surely, 2^8731903493 is an apocalyptic number.

It is an amenable number.

8731903493 is a deficient number, since it is larger than the sum of its proper divisors (1).

8731903493 is an equidigital number, since it uses as much as digits as its factorization.

8731903493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 8731903493 is about 93444.6547053388. The cubic root of 8731903493 is about 2059.2210814701.

The spelling of 8731903493 in words is "eight billion, seven hundred thirty-one million, nine hundred three thousand, four hundred ninety-three".