1144654653 has 4 divisors (see below), whose sum is σ = 1526206208. Its totient is φ = 763103100.

The previous prime is 1144654583. The next prime is 1144654669. The reversal of 1144654653 is 3564564411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1144654653 - 2¹⁷ = 1144523581 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144654153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190775773 + ... + 190775778.

It is an arithmetic number, because the mean of its divisors is an integer number (381551552).

Almost surely, 2^1144654653 is an apocalyptic number.

It is an amenable number.

1144654653 is a deficient number, since it is larger than the sum of its proper divisors (381551555).

1144654653 is an equidigital number, since it uses as much as digits as its factorization.

1144654653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381551554.

The product of its digits is 172800, while the sum is 39.

The square root of 1144654653 is about 33832.7452773197. The cubic root of 1144654653 is about 1046.0637666207.

The spelling of 1144654653 in words is "one billion, one hundred forty-four million, six hundred fifty-four thousand, six hundred fifty-three".