1144632980 has 48 divisors (see below), whose sum is σ = 2451242640. Its totient is φ = 448892928.

The previous prime is 1144632949. The next prime is 1144632989. The reversal of 1144632980 is 892364411.

It can be written as a sum of positive squares in 8 ways, for example, as 23990404 + 1120642576 = 4898^2 + 33476^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144632989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208754 + ... + 214166.

It is an arithmetic number, because the mean of its divisors is an integer number (51067555).

Almost surely, 2^1144632980 is an apocalyptic number.

1144632980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1144632980 is an abundant number, since it is smaller than the sum of its proper divisors (1306609660).

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

1144632980 is a wasteful number, since it uses less digits than its factorization.

1144632980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5628 (or 5626 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 1144632980 is about 33832.4249795961. The cubic root of 1144632980 is about 1046.0571644888.

The spelling of 1144632980 in words is "one billion, one hundred forty-four million, six hundred thirty-two thousand, nine hundred eighty".