6451376949 has 20 divisors (see below), whose sum is σ = 9672836800. Its totient is φ = 4285032840.

The previous prime is 6451376891. The next prime is 6451376957. The reversal of 6451376949 is 9496731546.

6451376949 is a `hidden beast` number, since 64 + 513 + 7 + 69 + 4 + 9 = 666.

It is not a de Polignac number, because 6451376949 - 2¹¹ = 6451374901 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6451376895 and 6451376904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6451376969) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 124999 + ... + 168900.

It is an arithmetic number, because the mean of its divisors is an integer number (483641840).

Almost surely, 2^6451376949 is an apocalyptic number.

It is an amenable number.

6451376949 is a deficient number, since it is larger than the sum of its proper divisors (3221459851).

6451376949 is a wasteful number, since it uses less digits than its factorization.

6451376949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294182 (or 294173 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The square root of 6451376949 is about 80320.4640736095. The cubic root of 6451376949 is about 1861.5904372778.

The spelling of 6451376949 in words is "six billion, four hundred fifty-one million, three hundred seventy-six thousand, nine hundred forty-nine".