1144663415 has 16 divisors (see below), whose sum is σ = 1570432512. Its totient is φ = 784607904.

The previous prime is 1144663381. The next prime is 1144663439. The reversal of 1144663415 is 5143664411.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1144663415 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121712 + ... + 130778.

It is an arithmetic number, because the mean of its divisors is an integer number (98152032).

Almost surely, 2^1144663415 is an apocalyptic number.

1144663415 is a deficient number, since it is larger than the sum of its proper divisors (425769097).

1144663415 is an equidigital number, since it uses as much as digits as its factorization.

1144663415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12686.

The product of its digits is 34560, while the sum is 35.

The square root of 1144663415 is about 33832.8747670073. The cubic root of 1144663415 is about 1046.0664357190.

The spelling of 1144663415 in words is "one billion, one hundred forty-four million, six hundred sixty-three thousand, four hundred fifteen".