1348435640 has 64 divisors (see below), whose sum is σ = 3116620800. Its totient is φ = 524818048.

The previous prime is 1348435639. The next prime is 1348435661. The reversal of 1348435640 is 465348431.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1348435594 and 1348435603.

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, 334517 + ... + 338523.

It is an arithmetic number, because the mean of its divisors is an integer number (48697200).

Almost surely, 2^1348435640 is an apocalyptic number.

1348435640 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 1348435640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1558310400).

1348435640 is an abundant number, since it is smaller than the sum of its proper divisors (1768185160).

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

1348435640 is a wasteful number, since it uses less digits than its factorization.

1348435640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4244 (or 4240 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The square root of 1348435640 is about 36721.0517278577. The cubic root of 1348435640 is about 1104.7823844785.

The spelling of 1348435640 in words is "one billion, three hundred forty-eight million, four hundred thirty-five thousand, six hundred forty".