1343613645 has 144 divisors (see below), whose sum is σ = 2708858880. Its totient is φ = 614718720.

The previous prime is 1343613619. The next prime is 1343613721. The reversal of 1343613645 is 5463163431.

1343613645 is a `hidden beast` number, since 1 + 3 + 4 + 3 + 6 + 1 + 3 + 645 = 666.

It is not a de Polignac number, because 1343613645 - 2¹² = 1343609549 is a prime.

It is a super-3 number, since 3×1343613645³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 10579572 + ... + 10579698.

It is an arithmetic number, because the mean of its divisors is an integer number (18811520).

Almost surely, 2^1343613645 is an apocalyptic number.

1343613645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1343613645 is an abundant number, since it is smaller than the sum of its proper divisors (1365245235).

1343613645 is a wasteful number, since it uses less digits than its factorization.

1343613645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 242 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 1343613645 is about 36655.3358325906. The cubic root of 1343613645 is about 1103.4639139745.

The spelling of 1343613645 in words is "one billion, three hundred forty-three million, six hundred thirteen thousand, six hundred forty-five".