2451449688 has 64 divisors (see below), whose sum is σ = 6267663360. Its totient is φ = 798660096.

The previous prime is 2451449659. The next prime is 2451449743. The reversal of 2451449688 is 8869441542.

It is a self number, because there is not a number n which added to its sum of digits gives 2451449688.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1378656 + ... + 1380432.

It is an arithmetic number, because the mean of its divisors is an integer number (97932240).

Almost surely, 2^2451449688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2451449688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3133831680).

2451449688 is an abundant number, since it is smaller than the sum of its proper divisors (3816213672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2451449688 is a wasteful number, since it uses less digits than its factorization.

2451449688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3056 (or 3052 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 51.

The square root of 2451449688 is about 49512.1165776621. The cubic root of 2451449688 is about 1348.3655918870.

The spelling of 2451449688 in words is "two billion, four hundred fifty-one million, four hundred forty-nine thousand, six hundred eighty-eight".