1144245511 has 2 divisors, whose sum is σ = 1144245512. Its totient is φ = 1144245510.

The previous prime is 1144245491. The next prime is 1144245517. The reversal of 1144245511 is 1155424411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1144245511 - 2¹³ = 1144237319 is a prime.

It is a super-2 number, since 2×1144245511² = 2618595578887302242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1144245511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1144245517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572122755 + 572122756.

It is an arithmetic number, because the mean of its divisors is an integer number (572122756).

Almost surely, 2^1144245511 is an apocalyptic number.

1144245511 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144245511 is an equidigital number, since it uses as much as digits as its factorization.

1144245511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3200, while the sum is 28.

The square root of 1144245511 is about 33826.6981983167. The cubic root of 1144245511 is about 1045.9391177806.

Adding to 1144245511 its reverse (1155424411), we get a palindrome (2299669922).

It can be divided in two parts, 11442 and 45511, that added together give a triangular number (56953 = T₃₃₇).

The spelling of 1144245511 in words is "one billion, one hundred forty-four million, two hundred forty-five thousand, five hundred eleven".