6402638213 has 8 divisors (see below), whose sum is σ = 6505608960. Its totient is φ = 6300022960.

The previous prime is 6402638167. The next prime is 6402638219. The reversal of 6402638213 is 3128362046.

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 6402638213 - 2⁸ = 6402637957 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 (6402638219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52445 + ... + 124722.

It is an arithmetic number, because the mean of its divisors is an integer number (813201120).

Almost surely, 2^6402638213 is an apocalyptic number.

It is an amenable number.

6402638213 is a deficient number, since it is larger than the sum of its proper divisors (102970747).

6402638213 is a wasteful number, since it uses less digits than its factorization.

6402638213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177747.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 6402638213 is about 80016.4871323404. The cubic root of 6402638213 is about 1856.8906129820.

The spelling of 6402638213 in words is "six billion, four hundred two million, six hundred thirty-eight thousand, two hundred thirteen".