2158771093 has 2 divisors, whose sum is σ = 2158771094. Its totient is φ = 2158771092.

The previous prime is 2158771081. The next prime is 2158771103. The reversal of 2158771093 is 3901778512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2030673969 + 128097124 = 45063^2 + 11318^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2158771093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2158771003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079385546 + 1079385547.

It is an arithmetic number, because the mean of its divisors is an integer number (1079385547).

Almost surely, 2^2158771093 is an apocalyptic number.

It is an amenable number.

2158771093 is a deficient number, since it is larger than the sum of its proper divisors (1).

2158771093 is an equidigital number, since it uses as much as digits as its factorization.

2158771093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 2158771093 is about 46462.5773391877. The cubic root of 2158771093 is about 1292.4156193768.

The spelling of 2158771093 in words is "two billion, one hundred fifty-eight million, seven hundred seventy-one thousand, ninety-three".