6997758149 has 2 divisors, whose sum is σ = 6997758150. Its totient is φ = 6997758148.

The previous prime is 6997758109. The next prime is 6997758179. The reversal of 6997758149 is 9418577996.

6997758149 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3826041025 + 3171717124 = 61855^2 + 56318^2 .

It is a cyclic number.

It is not a de Polignac number, because 6997758149 - 2¹⁶ = 6997692613 is a prime.

It is a super-2 number, since 2×6997758149² = 97937238223791812402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6997758109) 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, 3498879074 + 3498879075.

It is an arithmetic number, because the mean of its divisors is an integer number (3498879075).

Almost surely, 2^6997758149 is an apocalyptic number.

It is an amenable number.

6997758149 is a deficient number, since it is larger than the sum of its proper divisors (1).

6997758149 is an equidigital number, since it uses as much as digits as its factorization.

6997758149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34292160, while the sum is 65.

The square root of 6997758149 is about 83652.6039582750. The cubic root of 6997758149 is about 1912.7269463636.

The spelling of 6997758149 in words is "six billion, nine hundred ninety-seven million, seven hundred fifty-eight thousand, one hundred forty-nine".