1244660000 has 60 divisors (see below), whose sum is σ = 3062099502. Its totient is φ = 497856000.

The previous prime is 1244659993. The next prime is 1244660009. The reversal of 1244660000 is 664421.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 182682256 + 1061977744 = 13516^2 + 32588^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1244660009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 11117 + ... + 51116.

Almost surely, 2^1244660000 is an apocalyptic number.

1244660000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1244660000 is an abundant number, since it is smaller than the sum of its proper divisors (1817439502).

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

1244660000 is an frugal number, since it uses more digits than its factorization.

1244660000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62263 (or 62240 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1244660000 is about 35279.7392280612. The cubic root of 1244660000 is about 1075.6811979621.

The spelling of 1244660000 in words is "one billion, two hundred forty-four million, six hundred sixty thousand".