1145871036 has 60 divisors (see below), whose sum is σ = 3012995832. Its totient is φ = 379730592.

The previous prime is 1145871007. The next prime is 1145871047. The reversal of 1145871036 is 6301785411.

It is a super-2 number, since 2×1145871036² = 2626040862287426592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 45831 + ... + 66273.

Almost surely, 2^1145871036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1145871036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1506497916).

1145871036 is an abundant number, since it is smaller than the sum of its proper divisors (1867124796).

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

1145871036 is a wasteful number, since it uses less digits than its factorization.

1145871036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20632 (or 20621 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 1145871036 is about 33850.7169200299. The cubic root of 1145871036 is about 1046.4341734589.

The spelling of 1145871036 in words is "one billion, one hundred forty-five million, eight hundred seventy-one thousand, thirty-six".