2172346499 has 2 divisors, whose sum is σ = 2172346500. Its totient is φ = 2172346498.

The previous prime is 2172346489. The next prime is 2172346511. The reversal of 2172346499 is 9946432712.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2172346499 is a prime.

It is a super-3 number, since 3×2172346499³ (a number of 29 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2172346409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086173249 + 1086173250.

It is an arithmetic number, because the mean of its divisors is an integer number (1086173250).

Almost surely, 2^2172346499 is an apocalyptic number.

2172346499 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172346499 is an equidigital number, since it uses as much as digits as its factorization.

2172346499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 47.

The square root of 2172346499 is about 46608.4380665132. The cubic root of 2172346499 is about 1295.1190737396.

The spelling of 2172346499 in words is "two billion, one hundred seventy-two million, three hundred forty-six thousand, four hundred ninety-nine".