1088121877 has 4 divisors (see below), whose sum is σ = 1088408140. Its totient is φ = 1087835616.

The previous prime is 1088121857. The next prime is 1088121911. The reversal of 1088121877 is 7781218801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 654899281 + 433222596 = 25591^2 + 20814^2 .

It is a cyclic number.

It is not a de Polignac number, because 1088121877 - 2¹¹ = 1088119829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1088121857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137352 + ... + 145057.

It is an arithmetic number, because the mean of its divisors is an integer number (272102035).

Almost surely, 2^1088121877 is an apocalyptic number.

It is an amenable number.

1088121877 is a deficient number, since it is larger than the sum of its proper divisors (286263).

1088121877 is an equidigital number, since it uses as much as digits as its factorization.

1088121877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286262.

The product of its (nonzero) digits is 50176, while the sum is 43.

The square root of 1088121877 is about 32986.6924228544. The cubic root of 1088121877 is about 1028.5510392517.

The spelling of 1088121877 in words is "one billion, eighty-eight million, one hundred twenty-one thousand, eight hundred seventy-seven".