1081250780 has 24 divisors (see below), whose sum is σ = 2271900960. Its totient is φ = 432257600.

The previous prime is 1081250777. The next prime is 1081250789. The reversal of 1081250780 is 870521801.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081250789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23801 + ... + 52239.

It is an arithmetic number, because the mean of its divisors is an integer number (94662540).

Almost surely, 2^1081250780 is an apocalyptic number.

1081250780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1081250780 is an abundant number, since it is smaller than the sum of its proper divisors (1190650180).

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

1081250780 is a wasteful number, since it uses less digits than its factorization.

1081250780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30349 (or 30347 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 1081250780 is about 32882.3779553730. The cubic root of 1081250780 is about 1026.3814899643.

The spelling of 1081250780 in words is "one billion, eighty-one million, two hundred fifty thousand, seven hundred eighty".