161278662 has 8 divisors (see below), whose sum is σ = 322557336. Its totient is φ = 53759552.

The previous prime is 161278661. The next prime is 161278673. The reversal of 161278662 is 266872161.

It is a sphenic number, since it is the product of 3 distinct primes.

161278662 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 161278662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161278661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13439883 + ... + 13439894.

It is an arithmetic number, because the mean of its divisors is an integer number (40319667).

Almost surely, 2^161278662 is an apocalyptic number.

161278662 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161278662 is a wasteful number, since it uses less digits than its factorization.

161278662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26879782.

The product of its digits is 48384, while the sum is 39.

The square root of 161278662 is about 12699.5536142024. The cubic root of 161278662 is about 544.3258640017.

The spelling of 161278662 in words is "one hundred sixty-one million, two hundred seventy-eight thousand, six hundred sixty-two".