7643825749 has 8 divisors (see below), whose sum is σ = 8736611840. Its totient is φ = 6551242416.

The previous prime is 7643825701. The next prime is 7643825779. The reversal of 7643825749 is 9475283467.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7643825749 - 2⁷ = 7643825621 is a prime.

It is a super-2 number, since 2×7643825749² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7643825749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7643825779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41212 + ... + 130330.

It is an arithmetic number, because the mean of its divisors is an integer number (1092076480).

Almost surely, 2^7643825749 is an apocalyptic number.

It is an amenable number.

7643825749 is a deficient number, since it is larger than the sum of its proper divisors (1092786091).

7643825749 is a wasteful number, since it uses less digits than its factorization.

7643825749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101379.

The product of its digits is 10160640, while the sum is 55.

The square root of 7643825749 is about 87428.9754543652. The cubic root of 7643825749 is about 1969.8670965164.

The spelling of 7643825749 in words is "seven billion, six hundred forty-three million, eight hundred twenty-five thousand, seven hundred forty-nine".