7745206149 has 20 divisors (see below), whose sum is σ = 11573864896. Its totient is φ = 5161745736.

The previous prime is 7745206121. The next prime is 7745206163. The reversal of 7745206149 is 9416025477.

7745206149 is a `hidden beast` number, since 7 + 7 + 4 + 5 + 20 + 614 + 9 = 666.

It is not a de Polignac number, because 7745206149 - 2³² = 3450238853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7745206549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 256482 + ... + 285084.

Almost surely, 2^7745206149 is an apocalyptic number.

It is an amenable number.

7745206149 is a deficient number, since it is larger than the sum of its proper divisors (3828658747).

7745206149 is a wasteful number, since it uses less digits than its factorization.

7745206149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31958 (or 31949 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 7745206149 is about 88006.8528524910. The cubic root of 7745206149 is about 1978.5376875048.

The spelling of 7745206149 in words is "seven billion, seven hundred forty-five million, two hundred six thousand, one hundred forty-nine".