1340462653 has 4 divisors (see below), whose sum is σ = 1341214560. Its totient is φ = 1339710748.

The previous prime is 1340462633. The next prime is 1340462659. The reversal of 1340462653 is 3562640431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1340462653 - 2¹⁷ = 1340331581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340462659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373273 + ... + 376846.

It is an arithmetic number, because the mean of its divisors is an integer number (335303640).

Almost surely, 2^1340462653 is an apocalyptic number.

It is an amenable number.

1340462653 is a deficient number, since it is larger than the sum of its proper divisors (751907).

1340462653 is an equidigital number, since it uses as much as digits as its factorization.

1340462653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751906.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 1340462653 is about 36612.3292484922. The cubic root of 1340462653 is about 1102.6006381430.

The spelling of 1340462653 in words is "one billion, three hundred forty million, four hundred sixty-two thousand, six hundred fifty-three".