1147171808 has 24 divisors (see below), whose sum is σ = 2279221560. Its totient is φ = 568321920.

The previous prime is 1147171807. The next prime is 1147171811. The reversal of 1147171808 is 8081717411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147171807) 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, 160958 + ... + 167933.

It is an arithmetic number, because the mean of its divisors is an integer number (94967565).

Almost surely, 2^1147171808 is an apocalyptic number.

It is an amenable number.

1147171808 is a deficient number, since it is larger than the sum of its proper divisors (1132049752).

1147171808 is a wasteful number, since it uses less digits than its factorization.

1147171808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329010 (or 329002 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 38.

The square root of 1147171808 is about 33869.9248301498. The cubic root of 1147171808 is about 1046.8299880823.

The spelling of 1147171808 in words is "one billion, one hundred forty-seven million, one hundred seventy-one thousand, eight hundred eight".