1143615252 has 48 divisors (see below), whose sum is σ = 2878628480. Its totient is φ = 351278208.

The previous prime is 1143615241. The next prime is 1143615259. The reversal of 1143615252 is 2525163411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143615259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89649 + ... + 101607.

Almost surely, 2^1143615252 is an apocalyptic number.

1143615252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1143615252 is an abundant number, since it is smaller than the sum of its proper divisors (1735013228).

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

1143615252 is a wasteful number, since it uses less digits than its factorization.

1143615252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12592 (or 12590 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 1143615252 is about 33817.3809157362. The cubic root of 1143615252 is about 1045.7470454772.

Adding to 1143615252 its reverse (2525163411), we get a palindrome (3668778663).

The spelling of 1143615252 in words is "one billion, one hundred forty-three million, six hundred fifteen thousand, two hundred fifty-two".