1149817161 has 16 divisors (see below), whose sum is σ = 1579189248. Its totient is φ = 743702400.

The previous prime is 1149817157. The next prime is 1149817181. The reversal of 1149817161 is 1617189411.

It is not a de Polignac number, because 1149817161 - 2² = 1149817157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1149817111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3561 + ... + 48086.

It is an arithmetic number, because the mean of its divisors is an integer number (98699328).

Almost surely, 2^1149817161 is an apocalyptic number.

It is an amenable number.

1149817161 is a deficient number, since it is larger than the sum of its proper divisors (429372087).

1149817161 is a wasteful number, since it uses less digits than its factorization.

1149817161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51872.

The product of its digits is 12096, while the sum is 39.

The square root of 1149817161 is about 33908.9539944835. The cubic root of 1149817161 is about 1047.6340260229.

The spelling of 1149817161 in words is "one billion, one hundred forty-nine million, eight hundred seventeen thousand, one hundred sixty-one".