7457646387 has 8 divisors (see below), whose sum is σ = 9943935120. Its totient is φ = 4971560960.

The previous prime is 7457646359. The next prime is 7457646389. The reversal of 7457646387 is 7836467547.

7457646387 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 7457646387 - 2¹¹ = 7457644339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7457646389) 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 7 ways as a sum of consecutive naturals, for example, 92539 + ... + 153227.

It is an arithmetic number, because the mean of its divisors is an integer number (1242991890).

Almost surely, 2^7457646387 is an apocalyptic number.

7457646387 is a deficient number, since it is larger than the sum of its proper divisors (2486288733).

7457646387 is a wasteful number, since it uses less digits than its factorization.

7457646387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101653.

The product of its digits is 23708160, while the sum is 57.

The square root of 7457646387 is about 86357.6654790992. The cubic root of 7457646387 is about 1953.7422230836.

It can be divided in two parts, 745764 and 6387, that added together give a triangular number (752151 = T₁₂₂₆).

The spelling of 7457646387 in words is "seven billion, four hundred fifty-seven million, six hundred forty-six thousand, three hundred eighty-seven".