1010387780 has 12 divisors (see below), whose sum is σ = 2121814380. Its totient is φ = 404155104.

The previous prime is 1010387773. The next prime is 1010387783. The reversal of 1010387780 is 877830101.

It can be written as a sum of positive squares in 2 ways, for example, as 691479616 + 318908164 = 26296^2 + 17858^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1010387780.

It is not an unprimeable number, because it can be changed into a prime (1010387783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25259675 + ... + 25259714.

It is an arithmetic number, because the mean of its divisors is an integer number (176817865).

Almost surely, 2^1010387780 is an apocalyptic number.

1010387780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1010387780 is an abundant number, since it is smaller than the sum of its proper divisors (1111426600).

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

1010387780 is a wasteful number, since it uses less digits than its factorization.

1010387780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50519398 (or 50519396 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 35.

The square root of 1010387780 is about 31786.5974901373. The cubic root of 1010387780 is about 1003.4506724968.

The spelling of 1010387780 in words is "one billion, ten million, three hundred eighty-seven thousand, seven hundred eighty".