1144721374 has 4 divisors (see below), whose sum is σ = 1717082064. Its totient is φ = 572360686.

The previous prime is 1144721371. The next prime is 1144721381. The reversal of 1144721374 is 4731274411.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144721371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286180342 + ... + 286180345.

It is an arithmetic number, because the mean of its divisors is an integer number (429270516).

Almost surely, 2^1144721374 is an apocalyptic number.

1144721374 is a deficient number, since it is larger than the sum of its proper divisors (572360690).

1144721374 is an equidigital number, since it uses as much as digits as its factorization.

1144721374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572360689.

The product of its digits is 18816, while the sum is 34.

The square root of 1144721374 is about 33833.7313047201. The cubic root of 1144721374 is about 1046.0840909647.

Adding to 1144721374 its reverse (4731274411), we get a palindrome (5875995785).

The spelling of 1144721374 in words is "one billion, one hundred forty-four million, seven hundred twenty-one thousand, three hundred seventy-four".