1088791861 has 8 divisors (see below), whose sum is σ = 1108953344. Its totient is φ = 1068772320.

The previous prime is 1088791853. The next prime is 1088791883. The reversal of 1088791861 is 1681978801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1088791861 - 2³ = 1088791853 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 (1088791811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19941 + ... + 50746.

It is an arithmetic number, because the mean of its divisors is an integer number (138619168).

Almost surely, 2^1088791861 is an apocalyptic number.

It is an amenable number.

1088791861 is a deficient number, since it is larger than the sum of its proper divisors (20161483).

1088791861 is an equidigital number, since it uses as much as digits as its factorization.

1088791861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70971.

The product of its (nonzero) digits is 193536, while the sum is 49.

The square root of 1088791861 is about 32996.8462280867. The cubic root of 1088791861 is about 1028.7620975188.

The spelling of 1088791861 in words is "one billion, eighty-eight million, seven hundred ninety-one thousand, eight hundred sixty-one".