6469249144 has 16 divisors (see below), whose sum is σ = 12131070120. Its totient is φ = 3234297120.

The previous prime is 6469249133. The next prime is 6469249147. The reversal of 6469249144 is 4419429646.

It is a super-3 number, since 3×6469249144³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6469249147) 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, 56742 + ... + 127114.

Almost surely, 2^6469249144 is an apocalyptic number.

It is an amenable number.

6469249144 is a deficient number, since it is larger than the sum of its proper divisors (5661820976).

6469249144 is a wasteful number, since it uses less digits than its factorization.

6469249144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81870 (or 81866 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 49.

The square root of 6469249144 is about 80431.6426787368. The cubic root of 6469249144 is about 1863.3079017085.

The spelling of 6469249144 in words is "six billion, four hundred sixty-nine million, two hundred forty-nine thousand, one hundred forty-four".