1340252651 has 2 divisors, whose sum is σ = 1340252652. Its totient is φ = 1340252650.

The previous prime is 1340252633. The next prime is 1340252671. The reversal of 1340252651 is 1562520431.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1340252651 is a prime.

It is not a weakly prime, because it can be changed into another prime (1340252671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670126325 + 670126326.

It is an arithmetic number, because the mean of its divisors is an integer number (670126326).

Almost surely, 2^1340252651 is an apocalyptic number.

1340252651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340252651 is an equidigital number, since it uses as much as digits as its factorization.

1340252651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1340252651 is about 36609.4612224764. The cubic root of 1340252651 is about 1102.5430559265.

The spelling of 1340252651 in words is "one billion, three hundred forty million, two hundred fifty-two thousand, six hundred fifty-one".