161332653 has 8 divisors (see below), whose sum is σ = 217240416. Its totient is φ = 106490000.

The previous prime is 161332651. The next prime is 161332681. The reversal of 161332653 is 356233161.

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 161332653 - 2¹ = 161332651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161332653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161332651) 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, 265923 + ... + 266528.

It is an arithmetic number, because the mean of its divisors is an integer number (27155052).

Almost surely, 2^161332653 is an apocalyptic number.

It is an amenable number.

161332653 is a deficient number, since it is larger than the sum of its proper divisors (55907763).

161332653 is a wasteful number, since it uses less digits than its factorization.

161332653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532555.

The product of its digits is 9720, while the sum is 30.

The square root of 161332653 is about 12701.6791409640. The cubic root of 161332653 is about 544.3865982582.

The spelling of 161332653 in words is "one hundred sixty-one million, three hundred thirty-two thousand, six hundred fifty-three".