1340215164 has 36 divisors (see below), whose sum is σ = 3504588360. Its totient is φ = 431333280.

The previous prime is 1340215159. The next prime is 1340215181. The reversal of 1340215164 is 4615120431.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 640822 + ... + 642909.

Almost surely, 2^1340215164 is an apocalyptic number.

It is an amenable number.

1340215164 is an abundant number, since it is smaller than the sum of its proper divisors (2164373196).

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

1340215164 is a wasteful number, since it uses less digits than its factorization.

1340215164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283770 (or 1283765 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1340215164 is about 36608.9492337598. The cubic root of 1340215164 is about 1102.5327764177.

Adding to 1340215164 its reverse (4615120431), we get a palindrome (5955335595).

The spelling of 1340215164 in words is "one billion, three hundred forty million, two hundred fifteen thousand, one hundred sixty-four".