1348244640 has 72 divisors (see below), whose sum is σ = 4600889748. Its totient is φ = 359531520.

The previous prime is 1348244633. The next prime is 1348244669. The reversal of 1348244640 is 464428431.

1348244640 is a `hidden beast` number, since 1 + 3 + 4 + 8 + 2 + 4 + 4 + 640 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1347477264 + 767376 = 36708^2 + 876^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1348244595 and 1348244604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 466701 + ... + 469580.

Almost surely, 2^1348244640 is an apocalyptic number.

1348244640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1348244640 is an abundant number, since it is smaller than the sum of its proper divisors (3252645108).

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

1348244640 is a wasteful number, since it uses less digits than its factorization.

1348244640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936302 (or 936291 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 36.

The square root of 1348244640 is about 36718.4509477184. The cubic root of 1348244640 is about 1104.7302194874.

The spelling of 1348244640 in words is "one billion, three hundred forty-eight million, two hundred forty-four thousand, six hundred forty".