1090281040 has 20 divisors (see below), whose sum is σ = 2534903604. Its totient is φ = 436112384.

The previous prime is 1090281037. The next prime is 1090281053. The reversal of 1090281040 is 401820901.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 454030864 + 636250176 = 21308^2 + 25224^2 .

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 = 1090280996 and 1090281014.

It is a congruent number.

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, 6814177 + ... + 6814336.

Almost surely, 2^1090281040 is an apocalyptic number.

1090281040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1090281040 is an abundant number, since it is smaller than the sum of its proper divisors (1444622564).

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

1090281040 is a wasteful number, since it uses less digits than its factorization.

1090281040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13628526 (or 13628520 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1090281040 is about 33019.4039921983. The cubic root of 1090281040 is about 1029.2309085729.

The spelling of 1090281040 in words is "one billion, ninety million, two hundred eighty-one thousand, forty".