161140633 has 8 divisors (see below), whose sum is σ = 163248480. Its totient is φ = 159046560.

The previous prime is 161140621. The next prime is 161140643. The reversal of 161140633 is 336041161.

It is a happy number.

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 161140633 - 2⁵ = 161140601 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161140598 and 161140607.

It is not an unprimeable number, because it can be changed into a prime (161140613) 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, 21238 + ... + 27808.

It is an arithmetic number, because the mean of its divisors is an integer number (20406060).

Almost surely, 2^161140633 is an apocalyptic number.

It is an amenable number.

161140633 is a deficient number, since it is larger than the sum of its proper divisors (2107847).

161140633 is a wasteful number, since it uses less digits than its factorization.

161140633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6887.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 161140633 is about 12694.1180473478. The cubic root of 161140633 is about 544.1705340946.

Adding to 161140633 its reverse (336041161), we get a palindrome (497181794).

The spelling of 161140633 in words is "one hundred sixty-one million, one hundred forty thousand, six hundred thirty-three".