7794948149 has 4 divisors (see below), whose sum is σ = 7822688460. Its totient is φ = 7767207840.

The previous prime is 7794948067. The next prime is 7794948157. The reversal of 7794948149 is 9418494977.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6055641124 + 1739307025 = 77818^2 + 41705^2 .

It is a cyclic number.

It is not a de Polignac number, because 7794948149 - 2⁸ = 7794947893 is a prime.

It is a super-2 number, since 2×7794948149² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7794948091 and 7794948100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7794948169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13869734 + ... + 13870295.

It is an arithmetic number, because the mean of its divisors is an integer number (1955672115).

Almost surely, 2^7794948149 is an apocalyptic number.

It is an amenable number.

7794948149 is a deficient number, since it is larger than the sum of its proper divisors (27740311).

7794948149 is a wasteful number, since it uses less digits than its factorization.

7794948149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27740310.

The product of its digits is 18289152, while the sum is 62.

The square root of 7794948149 is about 88289.0035565019. The cubic root of 7794948149 is about 1982.7642366691.

The spelling of 7794948149 in words is "seven billion, seven hundred ninety-four million, nine hundred forty-eight thousand, one hundred forty-nine".