1145451612 has 48 divisors (see below), whose sum is σ = 2878912512. Its totient is φ = 353432640.

The previous prime is 1145451583. The next prime is 1145451623. The reversal of 1145451612 is 2161545411.

It is a self number, because there is not a number n which added to its sum of digits gives 1145451612.

It is a congruent number.

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, 58383 + ... + 75494.

It is an arithmetic number, because the mean of its divisors is an integer number (59977344).

Almost surely, 2^1145451612 is an apocalyptic number.

1145451612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1145451612 is an abundant number, since it is smaller than the sum of its proper divisors (1733460900).

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

1145451612 is a wasteful number, since it uses less digits than its factorization.

1145451612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133938 (or 133936 counting only the distinct ones).

The product of its digits is 4800, while the sum is 30.

The square root of 1145451612 is about 33844.5211518792. The cubic root of 1145451612 is about 1046.3064821934.

The spelling of 1145451612 in words is "one billion, one hundred forty-five million, four hundred fifty-one thousand, six hundred twelve".