6436445642 has 8 divisors (see below), whose sum is σ = 10532365632. Its totient is φ = 2925657100.

The previous prime is 6436445627. The next prime is 6436445657. The reversal of 6436445642 is 2465446346.

It is an interprime number because it is at equal distance from previous prime (6436445627) and next prime (6436445657).

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

It is a junction number, because it is equal to n+sod(n) for n = 6436445593 and 6436445602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146282834 + ... + 146282877.

It is an arithmetic number, because the mean of its divisors is an integer number (1316545704).

Almost surely, 2^6436445642 is an apocalyptic number.

6436445642 is a deficient number, since it is larger than the sum of its proper divisors (4095919990).

6436445642 is a wasteful number, since it uses less digits than its factorization.

6436445642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292565724.

The product of its digits is 1658880, while the sum is 44.

The square root of 6436445642 is about 80227.4618942915. The cubic root of 6436445642 is about 1860.1531497975.

The spelling of 6436445642 in words is "six billion, four hundred thirty-six million, four hundred forty-five thousand, six hundred forty-two".