161130849 has 32 divisors (see below), whose sum is σ = 249907200. Its totient is φ = 91316160.

The previous prime is 161130841. The next prime is 161130859. The reversal of 161130849 is 948031161.

It is not a de Polignac number, because 161130849 - 2³ = 161130841 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (161130841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47907 + ... + 51159.

It is an arithmetic number, because the mean of its divisors is an integer number (7809600).

Almost surely, 2^161130849 is an apocalyptic number.

161130849 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

161130849 is a deficient number, since it is larger than the sum of its proper divisors (88776351).

161130849 is a wasteful number, since it uses less digits than its factorization.

161130849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3365.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 161130849 is about 12693.7326661625. The cubic root of 161130849 is about 544.1595203770.

The spelling of 161130849 in words is "one hundred sixty-one million, one hundred thirty thousand, eight hundred forty-nine".