7546865749 has 4 divisors (see below), whose sum is σ = 7549523136. Its totient is φ = 7544208364.

The previous prime is 7546865737. The next prime is 7546865791. The reversal of 7546865749 is 9475686457.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9475686457 = 17 ⋅557393321.

It is a cyclic number.

It is not a de Polignac number, because 7546865749 - 2⁷ = 7546865621 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 (7546865149) 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 in 3 ways as a sum of consecutive naturals, for example, 1324429 + ... + 1330114.

It is an arithmetic number, because the mean of its divisors is an integer number (1887380784).

Almost surely, 2^7546865749 is an apocalyptic number.

It is an amenable number.

7546865749 is a deficient number, since it is larger than the sum of its proper divisors (2657387).

7546865749 is a wasteful number, since it uses less digits than its factorization.

7546865749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2657386.

The product of its digits is 50803200, while the sum is 61.

The square root of 7546865749 is about 86872.6985249106. The cubic root of 7546865749 is about 1961.5025398070.

The spelling of 7546865749 in words is "seven billion, five hundred forty-six million, eight hundred sixty-five thousand, seven hundred forty-nine".