162146881 has 6 divisors (see below), whose sum is σ = 175579350. Its totient is φ = 149673888.

The previous prime is 162146863. The next prime is 162146899. The reversal of 162146881 is 188641261.

It is an interprime number because it is at equal distance from previous prime (162146863) and next prime (162146899).

It can be written as a sum of positive squares in 3 ways, for example, as 7890481 + 154256400 = 2809^2 + 12420^2 .

It is not a de Polignac number, because 162146881 - 2¹¹ = 162144833 is a prime.

It is a super-2 number, since 2×162146881² = 52583222036056322, which contains 22 as substring.

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 162146881.

It is not an unprimeable number, because it can be changed into a prime (162146861) 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 5 ways as a sum of consecutive naturals, for example, 479556 + ... + 479893.

It is an arithmetic number, because the mean of its divisors is an integer number (29263225).

Almost surely, 2^162146881 is an apocalyptic number.

It is an amenable number.

162146881 is a deficient number, since it is larger than the sum of its proper divisors (13432469).

162146881 is an equidigital number, since it uses as much as digits as its factorization.

162146881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959475 (or 959462 counting only the distinct ones).

The product of its digits is 18432, while the sum is 37.

The square root of 162146881 is about 12733.6907846861. The cubic root of 162146881 is about 545.3008814710.

The spelling of 162146881 in words is "one hundred sixty-two million, one hundred forty-six thousand, eight hundred eighty-one".