1345949651 has 2 divisors, whose sum is σ = 1345949652. Its totient is φ = 1345949650.

The previous prime is 1345949639. The next prime is 1345949699. The reversal of 1345949651 is 1569495431.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1345949651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1345949596 and 1345949605.

It is not a weakly prime, because it can be changed into another prime (1345942651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672974825 + 672974826.

It is an arithmetic number, because the mean of its divisors is an integer number (672974826).

Almost surely, 2^1345949651 is an apocalyptic number.

1345949651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345949651 is an equidigital number, since it uses as much as digits as its factorization.

1345949651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 47.

The square root of 1345949651 is about 36687.1864688477. The cubic root of 1345949651 is about 1104.1030376574.

The spelling of 1345949651 in words is "one billion, three hundred forty-five million, nine hundred forty-nine thousand, six hundred fifty-one".