1145636156 has 12 divisors (see below), whose sum is σ = 2291272368. Its totient is φ = 490986912.

The previous prime is 1145636123. The next prime is 1145636159. The reversal of 1145636156 is 6516365411.

1145636156 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145636159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20457761 + ... + 20457816.

It is an arithmetic number, because the mean of its divisors is an integer number (190939364).

Almost surely, 2^1145636156 is an apocalyptic number.

It is an amenable number.

1145636156 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.

1145636156 is a wasteful number, since it uses less digits than its factorization.

1145636156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40915588 (or 40915586 counting only the distinct ones).

The product of its digits is 64800, while the sum is 38.

The square root of 1145636156 is about 33847.2473917747. The cubic root of 1145636156 is about 1046.3626694104.

The spelling of 1145636156 in words is "one billion, one hundred forty-five million, six hundred thirty-six thousand, one hundred fifty-six".