161195487 has 16 divisors (see below), whose sum is σ = 226512000. Its totient is φ = 101685024.

The previous prime is 161195467. The next prime is 161195491. The reversal of 161195487 is 784591161.

It is not a de Polignac number, because 161195487 - 2⁶ = 161195423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161195417) 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, 80464 + ... + 82442.

It is an arithmetic number, because the mean of its divisors is an integer number (14157000).

Almost surely, 2^161195487 is an apocalyptic number.

161195487 is a deficient number, since it is larger than the sum of its proper divisors (65316513).

161195487 is a wasteful number, since it uses less digits than its factorization.

161195487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3430.

The product of its digits is 60480, while the sum is 42.

The square root of 161195487 is about 12696.2784704810. The cubic root of 161195487 is about 544.2322742518.

The spelling of 161195487 in words is "one hundred sixty-one million, one hundred ninety-five thousand, four hundred eighty-seven".