1349620691 has 2 divisors, whose sum is σ = 1349620692. Its totient is φ = 1349620690.

The previous prime is 1349620637. The next prime is 1349620709. The reversal of 1349620691 is 1960269431.

It is a strong prime.

It is an emirp because it is prime and its reverse (1960269431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1349620691 - 2⁶ = 1349620627 is a prime.

It is not a weakly prime, because it can be changed into another prime (1349620091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 674810345 + 674810346.

It is an arithmetic number, because the mean of its divisors is an integer number (674810346).

Almost surely, 2^1349620691 is an apocalyptic number.

1349620691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1349620691 is an equidigital number, since it uses as much as digits as its factorization.

1349620691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 1349620691 is about 36737.1840374300. The cubic root of 1349620691 is about 1105.1059297996.

The spelling of 1349620691 in words is "one billion, three hundred forty-nine million, six hundred twenty thousand, six hundred ninety-one".