2149365797 has 2 divisors, whose sum is σ = 2149365798. Its totient is φ = 2149365796.

The previous prime is 2149365761. The next prime is 2149365901. The reversal of 2149365797 is 7975639412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2032747396 + 116618401 = 45086^2 + 10799^2 .

It is a cyclic number.

It is not a de Polignac number, because 2149365797 - 2¹² = 2149361701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2149365727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074682898 + 1074682899.

It is an arithmetic number, because the mean of its divisors is an integer number (1074682899).

Almost surely, 2^2149365797 is an apocalyptic number.

It is an amenable number.

2149365797 is a deficient number, since it is larger than the sum of its proper divisors (1).

2149365797 is an equidigital number, since it uses as much as digits as its factorization.

2149365797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2857680, while the sum is 53.

The square root of 2149365797 is about 46361.2531862546. The cubic root of 2149365797 is about 1290.5359624154.

The spelling of 2149365797 in words is "two billion, one hundred forty-nine million, three hundred sixty-five thousand, seven hundred ninety-seven".