1883891161 has 2 divisors, whose sum is σ = 1883891162. Its totient is φ = 1883891160.

The previous prime is 1883891147. The next prime is 1883891179. The reversal of 1883891161 is 1611983881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1050991561 + 832899600 = 32419^2 + 28860^2 .

It is a cyclic number.

It is not a de Polignac number, because 1883891161 - 2⁷ = 1883891033 is a prime.

It is not a weakly prime, because it can be changed into another prime (1883891561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 941945580 + 941945581.

It is an arithmetic number, because the mean of its divisors is an integer number (941945581).

Almost surely, 2^1883891161 is an apocalyptic number.

It is an amenable number.

1883891161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1883891161 is an equidigital number, since it uses as much as digits as its factorization.

1883891161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 46.

The square root of 1883891161 is about 43403.8150512141. The cubic root of 1883891161 is about 1235.0520744924.

The spelling of 1883891161 in words is "one billion, eight hundred eighty-three million, eight hundred ninety-one thousand, one hundred sixty-one".