1088972819 has 4 divisors (see below), whose sum is σ = 1187970360. Its totient is φ = 989975280.

The previous prime is 1088972771. The next prime is 1088972831. The reversal of 1088972819 is 9182798801.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9182798801 = 11 ⋅834799891.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1088972819 is a prime.

It is a super-2 number, since 2×1088972819² = 2371723601041613522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1088972869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49498754 + ... + 49498775.

It is an arithmetic number, because the mean of its divisors is an integer number (296992590).

Almost surely, 2^1088972819 is an apocalyptic number.

1088972819 is a deficient number, since it is larger than the sum of its proper divisors (98997541).

1088972819 is an equidigital number, since it uses as much as digits as its factorization.

1088972819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98997540.

The product of its (nonzero) digits is 580608, while the sum is 53.

The square root of 1088972819 is about 32999.5881640968. The cubic root of 1088972819 is about 1028.8190880315.

The spelling of 1088972819 in words is "one billion, eighty-eight million, nine hundred seventy-two thousand, eight hundred nineteen".