6389377155 has 48 divisors (see below), whose sum is σ = 13401595584. Its totient is φ = 2749040640.

The previous prime is 6389377139. The next prime is 6389377199. The reversal of 6389377155 is 5517739836.

It is not a de Polignac number, because 6389377155 - 2⁴ = 6389377139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 591226 + ... + 601935.

It is an arithmetic number, because the mean of its divisors is an integer number (279199908).

Almost surely, 2^6389377155 is an apocalyptic number.

6389377155 is an abundant number, since it is smaller than the sum of its proper divisors (7012218429).

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

6389377155 is a wasteful number, since it uses less digits than its factorization.

6389377155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193196 (or 1193193 counting only the distinct ones).

The product of its digits is 4762800, while the sum is 54.

The square root of 6389377155 is about 79933.5796458535. The cubic root of 6389377155 is about 1855.6077379432.

The spelling of 6389377155 in words is "six billion, three hundred eighty-nine million, three hundred seventy-seven thousand, one hundred fifty-five".