7649651847 has 4 divisors (see below), whose sum is σ = 10199535800. Its totient is φ = 5099767896.

The previous prime is 7649651837. The next prime is 7649651851. The reversal of 7649651847 is 7481569467.

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

It is not a de Polignac number, because 7649651847 - 2⁶ = 7649651783 is a prime.

It is a super-2 number, since 2×7649651847² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7649651837) 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 3 ways as a sum of consecutive naturals, for example, 1274941972 + ... + 1274941977.

It is an arithmetic number, because the mean of its divisors is an integer number (2549883950).

Almost surely, 2^7649651847 is an apocalyptic number.

7649651847 is a deficient number, since it is larger than the sum of its proper divisors (2549883953).

7649651847 is a wasteful number, since it uses less digits than its factorization.

7649651847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2549883952.

The product of its digits is 10160640, while the sum is 57.

The square root of 7649651847 is about 87462.2881418043. The cubic root of 7649651847 is about 1970.3674447515.

The spelling of 7649651847 in words is "seven billion, six hundred forty-nine million, six hundred fifty-one thousand, eight hundred forty-seven".