172893106949 has 2 divisors, whose sum is σ = 172893106950. Its totient is φ = 172893106948.

The previous prime is 172893106889. The next prime is 172893106963. The reversal of 172893106949 is 949601398271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163482748900 + 9410358049 = 404330^2 + 97007^2 .

It is a cyclic number.

It is not a de Polignac number, because 172893106949 - 2¹⁶ = 172893041413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172893106999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86446553474 + 86446553475.

It is an arithmetic number, because the mean of its divisors is an integer number (86446553475).

Almost surely, 2^172893106949 is an apocalyptic number.

It is an amenable number.

172893106949 is a deficient number, since it is larger than the sum of its proper divisors (1).

172893106949 is an equidigital number, since it uses as much as digits as its factorization.

172893106949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5878656, while the sum is 59.

The spelling of 172893106949 in words is "one hundred seventy-two billion, eight hundred ninety-three million, one hundred six thousand, nine hundred forty-nine".