1090733778 has 12 divisors (see below), whose sum is σ = 2363256558. Its totient is φ = 363577920.

The previous prime is 1090733731. The next prime is 1090733797. The reversal of 1090733778 is 8773370901.

It can be written as a sum of positive squares in only one way, i.e., 977375169 + 113358609 = 31263^2 + 10647^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30298143 + ... + 30298178.

Almost surely, 2^1090733778 is an apocalyptic number.

1090733778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1090733778 is an abundant number, since it is smaller than the sum of its proper divisors (1272522780).

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

1090733778 is a wasteful number, since it uses less digits than its factorization.

1090733778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60596329 (or 60596326 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 45.

The square root of 1090733778 is about 33026.2589162018. The cubic root of 1090733778 is about 1029.3733511917.

The spelling of 1090733778 in words is "one billion, ninety million, seven hundred thirty-three thousand, seven hundred seventy-eight".