1088971933 has 6 divisors (see below), whose sum is σ = 1266763326. Its totient is φ = 933404472.

The previous prime is 1088971889. The next prime is 1088971957. The reversal of 1088971933 is 3391798801.

It can be written as a sum of positive squares in only one way, i.e., 628354489 + 460617444 = 25067^2 + 21462^2 .

It is not a de Polignac number, because 1088971933 - 2²⁵ = 1055417501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 22223917 = 1088971933 / (1 + 0 + 8 + 8 + 9 + 7 + 1 + 9 + 3 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1088972933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11111910 + ... + 11112007.

It is an arithmetic number, because the mean of its divisors is an integer number (211127221).

Almost surely, 2^1088971933 is an apocalyptic number.

It is an amenable number.

1088971933 is a deficient number, since it is larger than the sum of its proper divisors (177791393).

1088971933 is an equidigital number, since it uses as much as digits as its factorization.

1088971933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22223931 (or 22223924 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 1088971933 is about 32999.5747396841. The cubic root of 1088971933 is about 1028.8188090120.

The spelling of 1088971933 in words is "one billion, eighty-eight million, nine hundred seventy-one thousand, nine hundred thirty-three".