1144664601 has 16 divisors (see below), whose sum is σ = 1583119296. Its totient is φ = 735146496.

The previous prime is 1144664581. The next prime is 1144664603. The reversal of 1144664601 is 1064664411.

It is not a de Polignac number, because 1144664601 - 2⁵ = 1144664569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1144664603) 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, 51360 + ... + 70193.

It is an arithmetic number, because the mean of its divisors is an integer number (98944956).

Almost surely, 2^1144664601 is an apocalyptic number.

It is an amenable number.

1144664601 is a deficient number, since it is larger than the sum of its proper divisors (438454695).

1144664601 is a wasteful number, since it uses less digits than its factorization.

1144664601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121672.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 1144664601 is about 33832.8922943339. The cubic root of 1144664601 is about 1046.0667969997.

The spelling of 1144664601 in words is "one billion, one hundred forty-four million, six hundred sixty-four thousand, six hundred one".