6494451971 has 16 divisors (see below), whose sum is σ = 7750009344. Its totient is φ = 5321156544.

The previous prime is 6494451941. The next prime is 6494452007. The reversal of 6494451971 is 1791544946.

It is a cyclic number.

It is not a de Polignac number, because 6494451971 - 2⁶ = 6494451907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6494451941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249551 + ... + 274343.

It is an arithmetic number, because the mean of its divisors is an integer number (484375584).

Almost surely, 2^6494451971 is an apocalyptic number.

6494451971 is a deficient number, since it is larger than the sum of its proper divisors (1255557373).

6494451971 is a wasteful number, since it uses less digits than its factorization.

6494451971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26450.

The product of its digits is 1088640, while the sum is 50.

The square root of 6494451971 is about 80588.1627225736. The cubic root of 6494451971 is about 1865.7244508527.

The spelling of 6494451971 in words is "six billion, four hundred ninety-four million, four hundred fifty-one thousand, nine hundred seventy-one".