1144505001 has 16 divisors (see below), whose sum is σ = 1593400320. Its totient is φ = 729350160.

The previous prime is 1144504993. The next prime is 1144505003. The reversal of 1144505001 is 1005054411.

It is not a de Polignac number, because 1144505001 - 2³ = 1144504993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1144505003) 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, 121810 + ... + 130868.

It is an arithmetic number, because the mean of its divisors is an integer number (99587520).

Almost surely, 2^1144505001 is an apocalyptic number.

It is an amenable number.

1144505001 is a deficient number, since it is larger than the sum of its proper divisors (448895319).

1144505001 is a wasteful number, since it uses less digits than its factorization.

1144505001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10916.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1144505001 is about 33830.5335606756. The cubic root of 1144505001 is about 1046.0181772204.

Adding to 1144505001 its reverse (1005054411), we get a palindrome (2149559412).

The spelling of 1144505001 in words is "one billion, one hundred forty-four million, five hundred five thousand, one".