161263162 has 4 divisors (see below), whose sum is σ = 241894746. Its totient is φ = 80631580.

The previous prime is 161263133. The next prime is 161263163. The reversal of 161263162 is 261362161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 104878081 + 56385081 = 10241^2 + 7509^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 161263162.

It is not an unprimeable number, because it can be changed into a prime (161263163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40315789 + ... + 40315792.

Almost surely, 2^161263162 is an apocalyptic number.

161263162 is a deficient number, since it is larger than the sum of its proper divisors (80631584).

161263162 is an equidigital number, since it uses as much as digits as its factorization.

161263162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80631583.

The product of its digits is 2592, while the sum is 28.

The square root of 161263162 is about 12698.9433418690. The cubic root of 161263162 is about 544.3084256105.

The spelling of 161263162 in words is "one hundred sixty-one million, two hundred sixty-three thousand, one hundred sixty-two".