1244919464 has 16 divisors (see below), whose sum is σ = 2397311700. Its totient is φ = 605636352.

The previous prime is 1244919439. The next prime is 1244919479. The reversal of 1244919464 is 4649194421.

It can be written as a sum of positive squares in 2 ways, for example, as 988599364 + 256320100 = 31442^2 + 16010^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2102609 + ... + 2103200.

Almost surely, 2^1244919464 is an apocalyptic number.

It is an amenable number.

1244919464 is a deficient number, since it is larger than the sum of its proper divisors (1152392236).

1244919464 is a wasteful number, since it uses less digits than its factorization.

1244919464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4205852 (or 4205848 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The square root of 1244919464 is about 35283.4162745049. The cubic root of 1244919464 is about 1075.7559388967.

It can be divided in two parts, 12449 and 19464, that added together give a palindrome (31913).

The spelling of 1244919464 in words is "one billion, two hundred forty-four million, nine hundred nineteen thousand, four hundred sixty-four".