1143366620 has 96 divisors (see below), whose sum is σ = 2785176576. Its totient is φ = 389657600.

The previous prime is 1143366619. The next prime is 1143366643. The reversal of 1143366620 is 266633411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1162649 + ... + 1163631.

It is an arithmetic number, because the mean of its divisors is an integer number (29012256).

Almost surely, 2^1143366620 is an apocalyptic number.

1143366620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143366620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1392588288).

1143366620 is an abundant number, since it is smaller than the sum of its proper divisors (1641809956).

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

1143366620 is a wasteful number, since it uses less digits than its factorization.

1143366620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331 (or 1329 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 1143366620 is about 33813.7046180983. The cubic root of 1143366620 is about 1045.6712551204.

It can be divided in two parts, 1143 and 366620, that added together give a palindrome (367763).

The spelling of 1143366620 in words is "one billion, one hundred forty-three million, three hundred sixty-six thousand, six hundred twenty".