1011668893 has 2 divisors, whose sum is σ = 1011668894. Its totient is φ = 1011668892.

The previous prime is 1011668887. The next prime is 1011668921. The reversal of 1011668893 is 3988661101.

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., 619113924 + 392554969 = 24882^2 + 19813^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011668893 - 2²⁵ = 978114461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011668863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505834446 + 505834447.

It is an arithmetic number, because the mean of its divisors is an integer number (505834447).

Almost surely, 2^1011668893 is an apocalyptic number.

It is an amenable number.

1011668893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011668893 is an equidigital number, since it uses as much as digits as its factorization.

1011668893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 1011668893 is about 31806.7428857467. The cubic root of 1011668893 is about 1003.8745990927.

The spelling of 1011668893 in words is "one billion, eleven million, six hundred sixty-eight thousand, eight hundred ninety-three".