162081987 has 8 divisors (see below), whose sum is σ = 216499536. Its totient is φ = 107859552.

The previous prime is 162081967. The next prime is 162082001. The reversal of 162081987 is 789180261.

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

It is not a de Polignac number, because 162081987 - 2¹⁸ = 161819843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (162081937) 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 7 ways as a sum of consecutive naturals, for example, 46828 + ... + 50169.

It is an arithmetic number, because the mean of its divisors is an integer number (27062442).

Almost surely, 2^162081987 is an apocalyptic number.

162081987 is a deficient number, since it is larger than the sum of its proper divisors (54417549).

162081987 is an equidigital number, since it uses as much as digits as its factorization.

162081987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97557.

The product of its (nonzero) digits is 48384, while the sum is 42.

The square root of 162081987 is about 12731.1424074982. The cubic root of 162081987 is about 545.2281254672.

The spelling of 162081987 in words is "one hundred sixty-two million, eighty-one thousand, nine hundred eighty-seven".