1144458620 has 24 divisors (see below), whose sum is σ = 2480892288. Its totient is φ = 443016000.

The previous prime is 1144458619. The next prime is 1144458629. The reversal of 1144458620 is 268544411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144458629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 922331 + ... + 923570.

It is an arithmetic number, because the mean of its divisors is an integer number (103370512).

Almost surely, 2^1144458620 is an apocalyptic number.

1144458620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1144458620 is an abundant number, since it is smaller than the sum of its proper divisors (1336433668).

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

1144458620 is a wasteful number, since it uses less digits than its factorization.

1144458620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1845941 (or 1845939 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 1144458620 is about 33829.8480635075. The cubic root of 1144458620 is about 1046.0040470872.

The spelling of 1144458620 in words is "one billion, one hundred forty-four million, four hundred fifty-eight thousand, six hundred twenty".