1144555405 has 16 divisors (see below), whose sum is σ = 1599295104. Its totient is φ = 770028480.

The previous prime is 1144555339. The next prime is 1144555409. The reversal of 1144555405 is 5045554411.

It is not a de Polignac number, because 1144555405 - 2¹¹ = 1144553357 is a prime.

It is a super-2 number, since 2×1144555405² = 2620014150229428050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144555409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306651 + ... + 310360.

It is an arithmetic number, because the mean of its divisors is an integer number (99955944).

Almost surely, 2^1144555405 is an apocalyptic number.

It is an amenable number.

1144555405 is a deficient number, since it is larger than the sum of its proper divisors (454739699).

1144555405 is an equidigital number, since it uses as much as digits as its factorization.

1144555405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617076.

The product of its (nonzero) digits is 40000, while the sum is 34.

The square root of 1144555405 is about 33831.2785008193. The cubic root of 1144555405 is about 1046.0335325418.

The spelling of 1144555405 in words is "one billion, one hundred forty-four million, five hundred fifty-five thousand, four hundred five".