2161652323 has 8 divisors (see below), whose sum is σ = 2297076192. Its totient is φ = 2027147136.

The previous prime is 2161652299. The next prime is 2161652327. The reversal of 2161652323 is 3232561612.

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 2161652323 - 2⁵ = 2161652291 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2161652327) 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, 224815 + ... + 234232.

It is an arithmetic number, because the mean of its divisors is an integer number (287134524).

Almost surely, 2^2161652323 is an apocalyptic number.

2161652323 is a deficient number, since it is larger than the sum of its proper divisors (135423869).

2161652323 is a wasteful number, since it uses less digits than its factorization.

2161652323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459341.

The product of its digits is 12960, while the sum is 31.

The square root of 2161652323 is about 46493.5729214265. The cubic root of 2161652323 is about 1292.9903431546.

The spelling of 2161652323 in words is "two billion, one hundred sixty-one million, six hundred fifty-two thousand, three hundred twenty-three".