161471633 has 8 divisors (see below), whose sum is σ = 170116320. Its totient is φ = 152841600.

The previous prime is 161471621. The next prime is 161471657. The reversal of 161471633 is 336174161.

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

It is a cyclic number.

It is not a de Polignac number, because 161471633 - 2⁴ = 161471617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 161471633.

It is not an unprimeable number, because it can be changed into a prime (161474633) 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, 24641 + ... + 30497.

It is an arithmetic number, because the mean of its divisors is an integer number (21264540).

Almost surely, 2^161471633 is an apocalyptic number.

It is an amenable number.

161471633 is a deficient number, since it is larger than the sum of its proper divisors (8644687).

161471633 is a wasteful number, since it uses less digits than its factorization.

161471633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7327.

The product of its digits is 9072, while the sum is 32.

The square root of 161471633 is about 12707.1488934379. The cubic root of 161471633 is about 544.5428739882.

The spelling of 161471633 in words is "one hundred sixty-one million, four hundred seventy-one thousand, six hundred thirty-three".