161959063 has 6 divisors (see below), whose sum is σ = 188401416. Its totient is φ = 138822012.

The previous prime is 161959037. The next prime is 161959111. The reversal of 161959063 is 360959161.

It is not a de Polignac number, because 161959063 - 2¹³ = 161950871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161959013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1652595 + ... + 1652692.

It is an arithmetic number, because the mean of its divisors is an integer number (31400236).

Almost surely, 2^161959063 is an apocalyptic number.

161959063 is a deficient number, since it is larger than the sum of its proper divisors (26442353).

161959063 is an equidigital number, since it uses as much as digits as its factorization.

161959063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3305301 (or 3305294 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 161959063 is about 12726.3138025117. The cubic root of 161959063 is about 545.0902557926.

The spelling of 161959063 in words is "one hundred sixty-one million, nine hundred fifty-nine thousand, sixty-three".