1013447780 has 12 divisors (see below), whose sum is σ = 2128240380. Its totient is φ = 405379104.

The previous prime is 1013447777. The next prime is 1013447789. The reversal of 1013447780 is 877443101.

It can be written as a sum of positive squares in 2 ways, for example, as 102373924 + 911073856 = 10118^2 + 30184^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1013447780.

It is not an unprimeable number, because it can be changed into a prime (1013447789) 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, 25336175 + ... + 25336214.

It is an arithmetic number, because the mean of its divisors is an integer number (177353365).

Almost surely, 2^1013447780 is an apocalyptic number.

1013447780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1013447780 is an abundant number, since it is smaller than the sum of its proper divisors (1114792600).

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

1013447780 is a wasteful number, since it uses less digits than its factorization.

1013447780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50672398 (or 50672396 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 1013447780 is about 31834.6945956766. The cubic root of 1013447780 is about 1004.4626484770.

The spelling of 1013447780 in words is "one billion, thirteen million, four hundred forty-seven thousand, seven hundred eighty".