6480279149 has 4 divisors (see below), whose sum is σ = 6638334780. Its totient is φ = 6322223520.

The previous prime is 6480279119. The next prime is 6480279161. The reversal of 6480279149 is 9419720846.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 141253225 + 6339025924 = 11885^2 + 79618^2 .

It is a cyclic number.

It is not a de Polignac number, because 6480279149 - 2¹⁶ = 6480213613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6480279097 and 6480279106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6480279119) 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, 79027754 + ... + 79027835.

It is an arithmetic number, because the mean of its divisors is an integer number (1659583695).

Almost surely, 2^6480279149 is an apocalyptic number.

It is an amenable number.

6480279149 is a deficient number, since it is larger than the sum of its proper divisors (158055631).

6480279149 is a wasteful number, since it uses less digits than its factorization.

6480279149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158055630.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 6480279149 is about 80500.1810494858. The cubic root of 6480279149 is about 1864.3662742017.

The spelling of 6480279149 in words is "six billion, four hundred eighty million, two hundred seventy-nine thousand, one hundred forty-nine".