6390325906 has 4 divisors (see below), whose sum is σ = 9585488862. Its totient is φ = 3195162952.

The previous prime is 6390325873. The next prime is 6390325927. The reversal of 6390325906 is 6095230936.

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

It can be written as a sum of positive squares in only one way, i.e., 6012606681 + 377719225 = 77541^2 + 19435^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1597581475 + ... + 1597581478.

Almost surely, 2^6390325906 is an apocalyptic number.

6390325906 is a deficient number, since it is larger than the sum of its proper divisors (3195162956).

6390325906 is a wasteful number, since it uses less digits than its factorization.

6390325906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3195162955.

The product of its (nonzero) digits is 262440, while the sum is 43.

The square root of 6390325906 is about 79939.5140465590. The cubic root of 6390325906 is about 1855.6995790582.

The spelling of 6390325906 in words is "six billion, three hundred ninety million, three hundred twenty-five thousand, nine hundred six".