1253669760 has 768 divisors, whose sum is σ = 5499187200. Its totient is φ = 256573440.

The previous prime is 1253669741. The next prime is 1253669771. The reversal of 1253669760 is 679663521.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 21248611 + ... + 21248669.

It is an arithmetic number, because the mean of its divisors is an integer number (7160400).

Almost surely, 2^1253669760 is an apocalyptic number.

1253669760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1253669760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2749593600).

1253669760 is an abundant number, since it is smaller than the sum of its proper divisors (4245517440).

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

1253669760 is a wasteful number, since it uses less digits than its factorization.

1253669760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 1253669760 is about 35407.1992679455. The cubic root of 1253669760 is about 1078.2704828502.

The spelling of 1253669760 in words is "one billion, two hundred fifty-three million, six hundred sixty-nine thousand, seven hundred sixty".