1244501601 has 16 divisors (see below), whose sum is σ = 1896966144. Its totient is φ = 710925264.

The previous prime is 1244501597. The next prime is 1244501651. The reversal of 1244501601 is 1061054421.

It is a happy number.

It is not a de Polignac number, because 1244501601 - 2² = 1244501597 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1244501651) 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, 82120 + ... + 96086.

It is an arithmetic number, because the mean of its divisors is an integer number (118560384).

Almost surely, 2^1244501601 is an apocalyptic number.

It is an amenable number.

1244501601 is a deficient number, since it is larger than the sum of its proper divisors (652464543).

1244501601 is a wasteful number, since it uses less digits than its factorization.

1244501601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18220.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1244501601 is about 35277.4942562535. The cubic root of 1244501601 is about 1075.6355646019.

The spelling of 1244501601 in words is "one billion, two hundred forty-four million, five hundred one thousand, six hundred one".