1143616747 has 24 divisors (see below), whose sum is σ = 1418323200. Its totient is φ = 902884320.

The previous prime is 1143616709. The next prime is 1143616751. The reversal of 1143616747 is 7476163411.

It is not a de Polignac number, because 1143616747 - 2¹⁵ = 1143583979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1143616147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 816754 + ... + 818152.

It is an arithmetic number, because the mean of its divisors is an integer number (59096800).

Almost surely, 2^1143616747 is an apocalyptic number.

1143616747 is a deficient number, since it is larger than the sum of its proper divisors (274706453).

1143616747 is a wasteful number, since it uses less digits than its factorization.

1143616747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123 (or 2110 counting only the distinct ones).

The product of its digits is 84672, while the sum is 40.

The square root of 1143616747 is about 33817.4030197471. The cubic root of 1143616747 is about 1045.7475011641.

The spelling of 1143616747 in words is "one billion, one hundred forty-three million, six hundred sixteen thousand, seven hundred forty-seven".