1144448690 has 32 divisors (see below), whose sum is σ = 2568322944. Its totient is φ = 356711040.

The previous prime is 1144448647. The next prime is 1144448693. The reversal of 1144448690 is 968444411.

It is a super-2 number, since 2×1144448690² = 2619525608085432200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1144448693) 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, 742379 + ... + 743918.

It is an arithmetic number, because the mean of its divisors is an integer number (80260092).

Almost surely, 2^1144448690 is an apocalyptic number.

1144448690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1144448690 is an abundant number, since it is smaller than the sum of its proper divisors (1423874254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1144448690 is a wasteful number, since it uses less digits than its factorization.

1144448690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486322.

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 1144448690 is about 33829.7012993021. The cubic root of 1144448690 is about 1046.0010218285.

The spelling of 1144448690 in words is "one billion, one hundred forty-four million, four hundred forty-eight thousand, six hundred ninety".