1081294780 has 24 divisors (see below), whose sum is σ = 2272389840. Its totient is φ = 432199680.

The previous prime is 1081294759. The next prime is 1081294811. The reversal of 1081294780 is 874921801.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8995 + ... + 47365.

It is an arithmetic number, because the mean of its divisors is an integer number (94682910).

Almost surely, 2^1081294780 is an apocalyptic number.

1081294780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1081294780 is an abundant number, since it is smaller than the sum of its proper divisors (1191095060).

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

1081294780 is a wasteful number, since it uses less digits than its factorization.

1081294780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39789 (or 39787 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 1081294780 is about 32883.0469999360. The cubic root of 1081294780 is about 1026.3954121656.

The spelling of 1081294780 in words is "one billion, eighty-one million, two hundred ninety-four thousand, seven hundred eighty".