1011668887 has 2 divisors, whose sum is σ = 1011668888. Its totient is φ = 1011668886.

The previous prime is 1011668863. The next prime is 1011668893. The reversal of 1011668887 is 7888661101.

It is a strong prime.

It is an emirp because it is prime and its reverse (7888661101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011668887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011668807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505834443 + 505834444.

It is an arithmetic number, because the mean of its divisors is an integer number (505834444).

Almost surely, 2^1011668887 is an apocalyptic number.

1011668887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011668887 is an equidigital number, since it uses as much as digits as its factorization.

1011668887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 46.

The square root of 1011668887 is about 31806.7427914271. The cubic root of 1011668887 is about 1003.8745971081.

It can be divided in two parts, 10116 and 68887, that added together give a triangular number (79003 = T₃₉₇).

The spelling of 1011668887 in words is "one billion, eleven million, six hundred sixty-eight thousand, eight hundred eighty-seven".