1164971945 has 8 divisors (see below), whose sum is σ = 1404126144. Its totient is φ = 927871024.

The previous prime is 1164971897. The next prime is 1164971957. The reversal of 1164971945 is 5491794611.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1164971945 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1164971945.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512069 + ... + 514338.

It is an arithmetic number, because the mean of its divisors is an integer number (175515768).

Almost surely, 2^1164971945 is an apocalyptic number.

It is an amenable number.

1164971945 is a deficient number, since it is larger than the sum of its proper divisors (239154199).

1164971945 is a wasteful number, since it uses less digits than its factorization.

1164971945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026639.

The product of its digits is 272160, while the sum is 47.

The square root of 1164971945 is about 34131.6853524698. The cubic root of 1164971945 is about 1052.2166158559.

The spelling of 1164971945 in words is "one billion, one hundred sixty-four million, nine hundred seventy-one thousand, nine hundred forty-five".