1145338012 has 72 divisors (see below), whose sum is σ = 2611190400. Its totient is φ = 429219648.

The previous prime is 1145338009. The next prime is 1145338021. The reversal of 1145338012 is 2108335411.

It is a happy number.

It is a super-2 number, since 2×1145338012² = 2623598323464224288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83539 + ... + 96277.

Almost surely, 2^1145338012 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 1145338012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1305595200).

1145338012 is an abundant number, since it is smaller than the sum of its proper divisors (1465852388).

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

1145338012 is a wasteful number, since it uses less digits than its factorization.

1145338012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12795 (or 12780 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1145338012 is about 33842.8428474914. The cubic root of 1145338012 is about 1046.2718919513.

The spelling of 1145338012 in words is "one billion, one hundred forty-five million, three hundred thirty-eight thousand, twelve".