1145111340 has 48 divisors (see below), whose sum is σ = 3208490208. Its totient is φ = 305155584.

The previous prime is 1145111333. The next prime is 1145111351. The reversal of 1145111340 is 431115411.

It is a super-2 number, since 2×1145111340² = 2622559961993191200, which contains 22 as substring.

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, 95944 + ... + 107216.

It is an arithmetic number, because the mean of its divisors is an integer number (66843546).

Almost surely, 2^1145111340 is an apocalyptic number.

1145111340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145111340 is an abundant number, since it is smaller than the sum of its proper divisors (2063378868).

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

1145111340 is a wasteful number, since it uses less digits than its factorization.

1145111340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12978 (or 12976 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 1145111340 is about 33839.4937905401. The cubic root of 1145111340 is about 1046.2028654028.

Adding to 1145111340 its reverse (431115411), we get a palindrome (1576226751).

It can be divided in two parts, 11451 and 11340, that added together give a triangular number (22791 = T₂₁₃).

The spelling of 1145111340 in words is "one billion, one hundred forty-five million, one hundred eleven thousand, three hundred forty".