6409543474 has 4 divisors (see below), whose sum is σ = 9614315214. Its totient is φ = 3204771736.

The previous prime is 6409543471. The next prime is 6409543513. The reversal of 6409543474 is 4743459046.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4743459046 = 2 ⋅2371729523.

It can be written as a sum of positive squares in only one way, i.e., 4885031449 + 1524512025 = 69893^2 + 39045^2 .

It is not an unprimeable number, because it can be changed into a prime (6409543471) 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 as a sum of consecutive naturals, namely, 1602385867 + ... + 1602385870.

Almost surely, 2^6409543474 is an apocalyptic number.

6409543474 is a deficient number, since it is larger than the sum of its proper divisors (3204771740).

6409543474 is a wasteful number, since it uses less digits than its factorization.

6409543474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3204771739.

The product of its (nonzero) digits is 1451520, while the sum is 46.

The square root of 6409543474 is about 80059.6244932488. The cubic root of 6409543474 is about 1857.5579268315.

The spelling of 6409543474 in words is "six billion, four hundred nine million, five hundred forty-three thousand, four hundred seventy-four".