1045981780 has 24 divisors (see below), whose sum is σ = 2325772008. Its totient is φ = 393781248.

The previous prime is 1045981777. The next prime is 1045981841. The reversal of 1045981780 is 871895401.

It is a happy number.

1045981780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 157703364 + 888278416 = 12558^2 + 29804^2 .

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1537869 + ... + 1538548.

It is an arithmetic number, because the mean of its divisors is an integer number (96907167).

Almost surely, 2^1045981780 is an apocalyptic number.

1045981780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1045981780 is an abundant number, since it is smaller than the sum of its proper divisors (1279790228).

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

1045981780 is a wasteful number, since it uses less digits than its factorization.

1045981780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3076443 (or 3076441 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 43.

The square root of 1045981780 is about 32341.6415786212. The cubic root of 1045981780 is about 1015.0981583830.

The spelling of 1045981780 in words is "one billion, forty-five million, nine hundred eighty-one thousand, seven hundred eighty".