1088494640 has 20 divisors (see below), whose sum is σ = 2530750224. Its totient is φ = 435397824.

The previous prime is 1088494621. The next prime is 1088494651. The reversal of 1088494640 is 464948801.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 1088494591 and 1088494600.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6803012 + ... + 6803171.

Almost surely, 2^1088494640 is an apocalyptic number.

1088494640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1088494640 is an abundant number, since it is smaller than the sum of its proper divisors (1442255584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1088494640 is a wasteful number, since it uses less digits than its factorization.

1088494640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13606196 (or 13606190 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 1088494640 is about 32992.3421417759. The cubic root of 1088494640 is about 1028.6684776888.

The spelling of 1088494640 in words is "one billion, eighty-eight million, four hundred ninety-four thousand, six hundred forty".