1145115412 has 12 divisors (see below), whose sum is σ = 2290230880. Its totient is φ = 490763736.

The previous prime is 1145115407. The next prime is 1145115437. The reversal of 1145115412 is 2145115411.

It is a happy number.

1145115412 is an admirable number.

It is a super-2 number, since 2×1145115412² = 2622578613599859488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20448462 + ... + 20448517.

Almost surely, 2^1145115412 is an apocalyptic number.

It is an amenable number.

1145115412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1145115412 is a wasteful number, since it uses less digits than its factorization.

1145115412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40896990 (or 40896988 counting only the distinct ones).

The product of its digits is 800, while the sum is 25.

The square root of 1145115412 is about 33839.5539568712. The cubic root of 1145115412 is about 1046.2041054956.

Subtracting 1145115412 from its reverse (2145115411), we obtain a palindrome (999999999).

The spelling of 1145115412 in words is "one billion, one hundred forty-five million, one hundred fifteen thousand, four hundred twelve".