161406471 has 8 divisors (see below), whose sum is σ = 215302000. Its totient is φ = 107557632.

The previous prime is 161406457. The next prime is 161406473. The reversal of 161406471 is 174604161.

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

It is not a de Polignac number, because 161406471 - 2⁵ = 161406439 is a prime.

It is a super-3 number, since 3×161406471³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161406473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2596 + ... + 18153.

It is an arithmetic number, because the mean of its divisors is an integer number (26912750).

Almost surely, 2^161406471 is an apocalyptic number.

161406471 is a deficient number, since it is larger than the sum of its proper divisors (53895529).

161406471 is a wasteful number, since it uses less digits than its factorization.

161406471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23345.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 161406471 is about 12704.5846449225. The cubic root of 161406471 is about 544.4696139027.

The spelling of 161406471 in words is "one hundred sixty-one million, four hundred six thousand, four hundred seventy-one".