1088777891 has 2 divisors, whose sum is σ = 1088777892. Its totient is φ = 1088777890.

The previous prime is 1088777867. The next prime is 1088777909. The reversal of 1088777891 is 1987778801.

It is a strong prime.

It is an emirp because it is prime and its reverse (1987778801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1088777891 - 2¹⁴ = 1088761507 is a prime.

It is not a weakly prime, because it can be changed into another prime (1088777831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544388945 + 544388946.

It is an arithmetic number, because the mean of its divisors is an integer number (544388946).

Almost surely, 2^1088777891 is an apocalyptic number.

1088777891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1088777891 is an equidigital number, since it uses as much as digits as its factorization.

1088777891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1580544, while the sum is 56.

The square root of 1088777891 is about 32996.6345405103. The cubic root of 1088777891 is about 1028.7576975753.

The spelling of 1088777891 in words is "one billion, eighty-eight million, seven hundred seventy-seven thousand, eight hundred ninety-one".