1143215936 has 56 divisors (see below), whose sum is σ = 2374102440. Its totient is φ = 545605632.

The previous prime is 1143215933. The next prime is 1143215951. The reversal of 1143215936 is 6395123411.

It can be written as a sum of positive squares in 4 ways, for example, as 275560000 + 867655936 = 16600^2 + 29456^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1143215896 and 1143215905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143215933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120950 + ... + 130058.

Almost surely, 2^1143215936 is an apocalyptic number.

1143215936 is a gapful number since it is divisible by the number (16) 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 1143215936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1187051220).

1143215936 is an abundant number, since it is smaller than the sum of its proper divisors (1230886504).

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

1143215936 is an equidigital number, since it uses as much as digits as its factorization.

1143215936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9211 (or 9201 counting only the distinct ones).

The product of its digits is 19440, while the sum is 35.

The square root of 1143215936 is about 33811.4763948574. The cubic root of 1143215936 is about 1045.6253168515.

The spelling of 1143215936 in words is "one billion, one hundred forty-three million, two hundred fifteen thousand, nine hundred thirty-six".