2689451748 has 240 divisors, whose sum is σ = 8098675200. Its totient is φ = 772623360.

The previous prime is 2689451711. The next prime is 2689451749. The reversal of 2689451748 is 8471549862.

It is a happy number.

2689451748 is a `hidden beast` number, since 2 + 6 + 89 + 4 + 517 + 48 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 2689451694 and 2689451703.

It is not an unprimeable number, because it can be changed into a prime (2689451749) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3243798 + ... + 3244626.

It is an arithmetic number, because the mean of its divisors is an integer number (33744480).

Almost surely, 2^2689451748 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 2689451748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4049337600).

2689451748 is an abundant number, since it is smaller than the sum of its proper divisors (5409223452).

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

2689451748 is a wasteful number, since it uses less digits than its factorization.

2689451748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912 (or 901 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 2689451748 is about 51859.9242961268. The cubic root of 2689451748 is about 1390.6609261353.

The spelling of 2689451748 in words is "two billion, six hundred eighty-nine million, four hundred fifty-one thousand, seven hundred forty-eight".