1088648781 has 16 divisors (see below), whose sum is σ = 1605184320. Its totient is φ = 650747520.

The previous prime is 1088648773. The next prime is 1088648783. The reversal of 1088648781 is 1878468801.

It is not a de Polignac number, because 1088648781 - 2³ = 1088648773 is a prime.

It is a super-2 number, since 2×1088648781² = 2370312336745571922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1088648783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223546 + ... + 228363.

It is an arithmetic number, because the mean of its divisors is an integer number (100324020).

Almost surely, 2^1088648781 is an apocalyptic number.

1088648781 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1088648781 is a deficient number, since it is larger than the sum of its proper divisors (516535539).

1088648781 is a wasteful number, since it uses less digits than its factorization.

1088648781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451996.

The product of its (nonzero) digits is 688128, while the sum is 51.

The square root of 1088648781 is about 32994.6780708647. The cubic root of 1088648781 is about 1028.7170317493.

The spelling of 1088648781 in words is "one billion, eighty-eight million, six hundred forty-eight thousand, seven hundred eighty-one".