1088778481 has 12 divisors (see below), whose sum is σ = 1341041508. Its totient is φ = 878341632.

The previous prime is 1088778469. The next prime is 1088778517. The reversal of 1088778481 is 1848778801.

It can be written as a sum of positive squares in 2 ways, for example, as 900540081 + 188238400 = 30009^2 + 13720^2 .

It is not a de Polignac number, because 1088778481 - 2⁹ = 1088777969 is a prime.

It is a super-2 number, since 2×1088778481² = 2370877161377334722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1088778461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 652696 + ... + 654361.

It is an arithmetic number, because the mean of its divisors is an integer number (111753459).

Almost surely, 2^1088778481 is an apocalyptic number.

It is an amenable number.

1088778481 is a deficient number, since it is larger than the sum of its proper divisors (252263027).

1088778481 is a wasteful number, since it uses less digits than its factorization.

1088778481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307088 (or 1307081 counting only the distinct ones).

The product of its (nonzero) digits is 802816, while the sum is 52.

The square root of 1088778481 is about 32996.6434808148. The cubic root of 1088778481 is about 1028.7578834005.

The spelling of 1088778481 in words is "one billion, eighty-eight million, seven hundred seventy-eight thousand, four hundred eighty-one".