1111440144 has 40 divisors (see below), whose sum is σ = 3040117920. Its totient is φ = 348686848.

The previous prime is 1111440139. The next prime is 1111440149. The reversal of 1111440144 is 4410441111.

It is an interprime number because it is at equal distance from previous prime (1111440139) and next prime (1111440149).

It is a self number, because there is not a number n which added to its sum of digits gives 1111440144.

It is not an unprimeable number, because it can be changed into a prime (1111440149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 680214 + ... + 681845.

It is an arithmetic number, because the mean of its divisors is an integer number (76002948).

Almost surely, 2^1111440144 is an apocalyptic number.

It is an amenable number.

1111440144 is an abundant number, since it is smaller than the sum of its proper divisors (1928677776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1111440144 is a wasteful number, since it uses less digits than its factorization.

1111440144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362087 (or 1362081 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 1111440144 is about 33338.2684613343. The cubic root of 1111440144 is about 1035.8463967298.

Adding to 1111440144 its reverse (4410441111), we get a palindrome (5521881255).

The spelling of 1111440144 in words is "one billion, one hundred eleven million, four hundred forty thousand, one hundred forty-four".