1340614643 has 8 divisors (see below), whose sum is σ = 1348956000. Its totient is φ = 1332289728.

The previous prime is 1340614637. The next prime is 1340614729. The reversal of 1340614643 is 3464160431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1340614643 - 2¹² = 1340610547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340614633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186113 + ... + 193181.

It is an arithmetic number, because the mean of its divisors is an integer number (168619500).

Almost surely, 2^1340614643 is an apocalyptic number.

1340614643 is a deficient number, since it is larger than the sum of its proper divisors (8341357).

1340614643 is an equidigital number, since it uses as much as digits as its factorization.

1340614643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8221.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 1340614643 is about 36614.4048565588. The cubic root of 1340614643 is about 1102.6423098094.

The spelling of 1340614643 in words is "one billion, three hundred forty million, six hundred fourteen thousand, six hundred forty-three".