161308406 has 16 divisors (see below), whose sum is σ = 279637920. Its totient is φ = 68354880.

The previous prime is 161308387. The next prime is 161308417. The reversal of 161308406 is 604803161.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63485 + ... + 65976.

It is an arithmetic number, because the mean of its divisors is an integer number (17477370).

Almost surely, 2^161308406 is an apocalyptic number.

161308406 is a deficient number, since it is larger than the sum of its proper divisors (118329514).

161308406 is a wasteful number, since it uses less digits than its factorization.

161308406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129559.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 161308406 is about 12700.7246249968. The cubic root of 161308406 is about 544.3593245829.

The spelling of 161308406 in words is "one hundred sixty-one million, three hundred eight thousand, four hundred six".