160961638 has 4 divisors (see below), whose sum is σ = 241442460. Its totient is φ = 80480818.

The previous prime is 160961609. The next prime is 160961663. The reversal of 160961638 is 836169061.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 160961638.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 40240408 + ... + 40240411.

It is an arithmetic number, because the mean of its divisors is an integer number (60360615).

Almost surely, 2^160961638 is an apocalyptic number.

160961638 is a deficient number, since it is larger than the sum of its proper divisors (80480822).

160961638 is an equidigital number, since it uses as much as digits as its factorization.

160961638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80480821.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 160961638 is about 12687.0657758207. The cubic root of 160961638 is about 543.9689712514.

The spelling of 160961638 in words is "one hundred sixty million, nine hundred sixty-one thousand, six hundred thirty-eight".