1345213640 has 64 divisors (see below), whose sum is σ = 3079296000. Its totient is φ = 528816640.

The previous prime is 1345213613. The next prime is 1345213669. The reversal of 1345213640 is 463125431.

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, 636185 + ... + 638295.

It is an arithmetic number, because the mean of its divisors is an integer number (48114000).

Almost surely, 2^1345213640 is an apocalyptic number.

1345213640 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 1345213640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1539648000).

1345213640 is an abundant number, since it is smaller than the sum of its proper divisors (1734082360).

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

1345213640 is a wasteful number, since it uses less digits than its factorization.

1345213640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2390 (or 2386 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1345213640 is about 36677.1541971293. The cubic root of 1345213640 is about 1103.9017472772.

The spelling of 1345213640 in words is "one billion, three hundred forty-five million, two hundred thirteen thousand, six hundred forty".