1144451905 has 8 divisors (see below), whose sum is σ = 1373703912. Its totient is φ = 915320448.

The previous prime is 1144451887. The next prime is 1144451929. The reversal of 1144451905 is 5091544411.

It can be written as a sum of positive squares in 4 ways, for example, as 74442384 + 1070009521 = 8628^2 + 32711^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1144451905 - 2²³ = 1136063297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7734 + ... + 48463.

It is an arithmetic number, because the mean of its divisors is an integer number (171712989).

Almost surely, 2^1144451905 is an apocalyptic number.

It is an amenable number.

1144451905 is a deficient number, since it is larger than the sum of its proper divisors (229252007).

1144451905 is an equidigital number, since it uses as much as digits as its factorization.

1144451905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60275.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 1144451905 is about 33829.7488166850. The cubic root of 1144451905 is about 1046.0020013074.

The spelling of 1144451905 in words is "one billion, one hundred forty-four million, four hundred fifty-one thousand, nine hundred five".