162161078 has 4 divisors (see below), whose sum is σ = 243241620. Its totient is φ = 81080538.

The previous prime is 162161071. The next prime is 162161099. The reversal of 162161078 is 870161261.

It is a happy number.

162161078 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 870161261 = 53 ⋅16418137.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162161071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40540268 + ... + 40540271.

It is an arithmetic number, because the mean of its divisors is an integer number (60810405).

Almost surely, 2^162161078 is an apocalyptic number.

162161078 is a deficient number, since it is larger than the sum of its proper divisors (81080542).

162161078 is an equidigital number, since it uses as much as digits as its factorization.

162161078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81080541.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 162161078 is about 12734.2482306574. The cubic root of 162161078 is about 545.3167958704.

The spelling of 162161078 in words is "one hundred sixty-two million, one hundred sixty-one thousand, seventy-eight".