1931368093 has 2 divisors, whose sum is σ = 1931368094. Its totient is φ = 1931368092.

The previous prime is 1931368001. The next prime is 1931368097. The reversal of 1931368093 is 3908631391.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1879916164 + 51451929 = 43358^2 + 7173^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1931368093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1931368097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 965684046 + 965684047.

It is an arithmetic number, because the mean of its divisors is an integer number (965684047).

Almost surely, 2^1931368093 is an apocalyptic number.

It is an amenable number.

1931368093 is a deficient number, since it is larger than the sum of its proper divisors (1).

1931368093 is an equidigital number, since it uses as much as digits as its factorization.

1931368093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 1931368093 is about 43947.3331727876. Note that the first 3 decimals coincide. The cubic root of 1931368093 is about 1245.3411844284.

The spelling of 1931368093 in words is "one billion, nine hundred thirty-one million, three hundred sixty-eight thousand, ninety-three".