2161504307 has 2 divisors, whose sum is σ = 2161504308. Its totient is φ = 2161504306.

The previous prime is 2161504249. The next prime is 2161504351. The reversal of 2161504307 is 7034051612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2161504307 - 2¹⁶ = 2161438771 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2161504307.

It is not a weakly prime, because it can be changed into another prime (2161504507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080752153 + 1080752154.

It is an arithmetic number, because the mean of its divisors is an integer number (1080752154).

Almost surely, 2^2161504307 is an apocalyptic number.

2161504307 is a deficient number, since it is larger than the sum of its proper divisors (1).

2161504307 is an equidigital number, since it uses as much as digits as its factorization.

2161504307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 2161504307 is about 46491.9811042722. The cubic root of 2161504307 is about 1292.9608306031.

Adding to 2161504307 its reverse (7034051612), we get a palindrome (9195555919).

The spelling of 2161504307 in words is "two billion, one hundred sixty-one million, five hundred four thousand, three hundred seven".