1340456633 has 2 divisors, whose sum is σ = 1340456634. Its totient is φ = 1340456632.

The previous prime is 1340456627. The next prime is 1340456651. The reversal of 1340456633 is 3366540431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1032208384 + 308248249 = 32128^2 + 17557^2 .

It is an emirp because it is prime and its reverse (3366540431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1340456633 - 2⁶ = 1340456569 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1340456593 and 1340456602.

It is not a weakly prime, because it can be changed into another prime (1340456653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670228316 + 670228317.

It is an arithmetic number, because the mean of its divisors is an integer number (670228317).

Almost surely, 2^1340456633 is an apocalyptic number.

It is an amenable number.

1340456633 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340456633 is an equidigital number, since it uses as much as digits as its factorization.

1340456633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 35.

The square root of 1340456633 is about 36612.2470356573. The cubic root of 1340456633 is about 1102.5989875523.

The spelling of 1340456633 in words is "one billion, three hundred forty million, four hundred fifty-six thousand, six hundred thirty-three".