2642173069 has 2 divisors, whose sum is σ = 2642173070. Its totient is φ = 2642173068.

The previous prime is 2642173057. The next prime is 2642173109. The reversal of 2642173069 is 9603712462.

It is a happy number.

It is an a-pointer prime, because the next prime (2642173109) can be obtained adding 2642173069 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1741392900 + 900780169 = 41730^2 + 30013^2 .

It is a cyclic number.

It is not a de Polignac number, because 2642173069 - 2⁷ = 2642172941 is a prime.

It is a super-2 number, since 2×2642173069² = 13962157053097757522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2642173669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321086534 + 1321086535.

It is an arithmetic number, because the mean of its divisors is an integer number (1321086535).

Almost surely, 2^2642173069 is an apocalyptic number.

It is an amenable number.

2642173069 is a deficient number, since it is larger than the sum of its proper divisors (1).

2642173069 is an equidigital number, since it uses as much as digits as its factorization.

2642173069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 2642173069 is about 51402.0726138548. The cubic root of 2642173069 is about 1382.4637547927.

The spelling of 2642173069 in words is "two billion, six hundred forty-two million, one hundred seventy-three thousand, sixty-nine".