1145031144 has 64 divisors (see below), whose sum is σ = 2895571200. Its totient is φ = 377305344.

The previous prime is 1145031137. The next prime is 1145031161. The reversal of 1145031144 is 4411305411.

It is a happy number.

It is a super-2 number, since 2×1145031144² = 2622192641459897472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 862209 + ... + 863535.

It is an arithmetic number, because the mean of its divisors is an integer number (45243300).

Almost surely, 2^1145031144 is an apocalyptic number.

It is an amenable number.

1145031144 is an abundant number, since it is smaller than the sum of its proper divisors (1750540056).

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

1145031144 is a wasteful number, since it uses less digits than its factorization.

1145031144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722 (or 1718 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1145031144 is about 33838.3088229894. The cubic root of 1145031144 is about 1046.1784417971.

Adding to 1145031144 its reverse (4411305411), we get a palindrome (5556336555).

The spelling of 1145031144 in words is "one billion, one hundred forty-five million, thirty-one thousand, one hundred forty-four".