1144864434 has 32 divisors (see below), whose sum is σ = 2687561856. Its totient is φ = 318263040.

The previous prime is 1144864433. The next prime is 1144864447. The reversal of 1144864434 is 4344684411.

It is a junction number, because it is equal to n+sod(n) for n = 1144864392 and 1144864401.

It is not an unprimeable number, because it can be changed into a prime (1144864433) 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, 366807 + ... + 369914.

It is an arithmetic number, because the mean of its divisors is an integer number (83986308).

Almost surely, 2^1144864434 is an apocalyptic number.

1144864434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1144864434 is an abundant number, since it is smaller than the sum of its proper divisors (1542697422).

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

1144864434 is a wasteful number, since it uses less digits than its factorization.

1144864434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736770.

The product of its digits is 147456, while the sum is 39.

The square root of 1144864434 is about 33835.8454009945. The cubic root of 1144864434 is about 1046.1276667959.

The spelling of 1144864434 in words is "one billion, one hundred forty-four million, eight hundred sixty-four thousand, four hundred thirty-four".