6418814977 has 4 divisors (see below), whose sum is σ = 6419021760. Its totient is φ = 6418608196.

The previous prime is 6418814971. The next prime is 6418814989. The reversal of 6418814977 is 7794188146.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6418814977 - 2¹⁹ = 6418290689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6418814971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46333 + ... + 122410.

It is an arithmetic number, because the mean of its divisors is an integer number (1604755440).

Almost surely, 2^6418814977 is an apocalyptic number.

It is an amenable number.

6418814977 is a deficient number, since it is larger than the sum of its proper divisors (206783).

6418814977 is a wasteful number, since it uses less digits than its factorization.

6418814977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206782.

The product of its digits is 2709504, while the sum is 55.

The square root of 6418814977 is about 80117.5073064558. The cubic root of 6418814977 is about 1858.4531573314.

The spelling of 6418814977 in words is "six billion, four hundred eighteen million, eight hundred fourteen thousand, nine hundred seventy-seven".