2111792549 has 2 divisors, whose sum is σ = 2111792550. Its totient is φ = 2111792548.

The previous prime is 2111792539. The next prime is 2111792561. The reversal of 2111792549 is 9452971112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2024370049 + 87422500 = 44993^2 + 9350^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111792549 - 2¹² = 2111788453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111792539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055896274 + 1055896275.

It is an arithmetic number, because the mean of its divisors is an integer number (1055896275).

Almost surely, 2^2111792549 is an apocalyptic number.

It is an amenable number.

2111792549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111792549 is an equidigital number, since it uses as much as digits as its factorization.

2111792549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 41.

The square root of 2111792549 is about 45954.2440803894. The cubic root of 2111792549 is about 1282.9717226554.

The spelling of 2111792549 in words is "two billion, one hundred eleven million, seven hundred ninety-two thousand, five hundred forty-nine".