1143572739 has 8 divisors (see below), whose sum is σ = 1525193040. Its totient is φ = 762167136.

The previous prime is 1143572707. The next prime is 1143572761. The reversal of 1143572739 is 9372753411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1143572739 - 2⁵ = 1143572707 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1143572739.

It is not an unprimeable number, because it can be changed into a prime (1143572539) 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, 40804 + ... + 62865.

It is an arithmetic number, because the mean of its divisors is an integer number (190649130).

Almost surely, 2^1143572739 is an apocalyptic number.

1143572739 is a deficient number, since it is larger than the sum of its proper divisors (381620301).

1143572739 is a wasteful number, since it uses less digits than its factorization.

1143572739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107349.

The product of its digits is 158760, while the sum is 42.

The square root of 1143572739 is about 33816.7523425890. The cubic root of 1143572739 is about 1045.7340870413.

The spelling of 1143572739 in words is "one billion, one hundred forty-three million, five hundred seventy-two thousand, seven hundred thirty-nine".