93894981091 has 2 divisors, whose sum is σ = 93894981092. Its totient is φ = 93894981090.

The previous prime is 93894981023. The next prime is 93894981119. The reversal of 93894981091 is 19018949839.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 93894981091 - 2¹¹ = 93894979043 is a prime.

It is not a weakly prime, because it can be changed into another prime (93894981491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46947490545 + 46947490546.

It is an arithmetic number, because the mean of its divisors is an integer number (46947490546).

Almost surely, 2^93894981091 is an apocalyptic number.

93894981091 is a deficient number, since it is larger than the sum of its proper divisors (1).

93894981091 is an equidigital number, since it uses as much as digits as its factorization.

93894981091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5038848, while the sum is 61.

The spelling of 93894981091 in words is "ninety-three billion, eight hundred ninety-four million, nine hundred eighty-one thousand, ninety-one".