1348669440 has 312 divisors, whose sum is σ = 4865847168. Its totient is φ = 358318080.

The previous prime is 1348669417. The next prime is 1348669513. The reversal of 1348669440 is 449668431.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4976505 + ... + 4976775.

It is an arithmetic number, because the mean of its divisors is an integer number (15595664).

Almost surely, 2^1348669440 is an apocalyptic number.

1348669440 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 1348669440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2432923584).

1348669440 is an abundant number, since it is smaller than the sum of its proper divisors (3517177728).

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

1348669440 is an frugal number, since it uses more digits than its factorization.

1348669440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The square root of 1348669440 is about 36724.2350498959. The cubic root of 1348669440 is about 1104.8462320924.

The spelling of 1348669440 in words is "one billion, three hundred forty-eight million, six hundred sixty-nine thousand, four hundred forty".