1143315772 has 12 divisors (see below), whose sum is σ = 2009175840. Its totient is φ = 569265536.

The previous prime is 1143315757. The next prime is 1143315779. The reversal of 1143315772 is 2775133411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143315779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 597013 + ... + 598924.

It is an arithmetic number, because the mean of its divisors is an integer number (167431320).

Almost surely, 2^1143315772 is an apocalyptic number.

It is an amenable number.

1143315772 is a deficient number, since it is larger than the sum of its proper divisors (865860068).

1143315772 is a wasteful number, since it uses less digits than its factorization.

1143315772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196180 (or 1196178 counting only the distinct ones).

The product of its digits is 17640, while the sum is 34.

The square root of 1143315772 is about 33812.9527252501. The cubic root of 1143315772 is about 1045.6557537990.

The spelling of 1143315772 in words is "one billion, one hundred forty-three million, three hundred fifteen thousand, seven hundred seventy-two".