1147671291 has 16 divisors (see below), whose sum is σ = 1692479264. Its totient is φ = 687170304.

The previous prime is 1147671281. The next prime is 1147671299. The reversal of 1147671291 is 1921767411.

It is a happy number.

It is not a de Polignac number, because 1147671291 - 2⁹ = 1147670779 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1147671299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 396226 + ... + 399111.

It is an arithmetic number, because the mean of its divisors is an integer number (105779954).

Almost surely, 2^1147671291 is an apocalyptic number.

1147671291 is a deficient number, since it is larger than the sum of its proper divisors (544807973).

1147671291 is a wasteful number, since it uses less digits than its factorization.

1147671291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795390.

The product of its digits is 21168, while the sum is 39.

The square root of 1147671291 is about 33877.2975752199. The cubic root of 1147671291 is about 1046.9818972996.

The spelling of 1147671291 in words is "one billion, one hundred forty-seven million, six hundred seventy-one thousand, two hundred ninety-one".