6399365154 has 192 divisors, whose sum is σ = 16550461440. Its totient is φ = 1613364480.

The previous prime is 6399365153. The next prime is 6399365179. The reversal of 6399365154 is 4515639936.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6399365097 and 6399365106.

It is not an unprimeable number, because it can be changed into a prime (6399365153) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27944712 + ... + 27944940.

It is an arithmetic number, because the mean of its divisors is an integer number (86200320).

Almost surely, 2^6399365154 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6399365154, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8275230720).

6399365154 is an abundant number, since it is smaller than the sum of its proper divisors (10151096286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6399365154 is a wasteful number, since it uses less digits than its factorization.

6399365154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425 (or 412 counting only the distinct ones).

The product of its digits is 2624400, while the sum is 51.

The square root of 6399365154 is about 79996.0321140993. The cubic root of 6399365154 is about 1856.5741419546.

The spelling of 6399365154 in words is "six billion, three hundred ninety-nine million, three hundred sixty-five thousand, one hundred fifty-four".