1345405651 has 2 divisors, whose sum is σ = 1345405652. Its totient is φ = 1345405650.

The previous prime is 1345405577. The next prime is 1345405667. The reversal of 1345405651 is 1565045431.

It is a strong prime.

It is an emirp because it is prime and its reverse (1565045431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1345405651 - 2²³ = 1337017043 is a prime.

It is not a weakly prime, because it can be changed into another prime (1345405151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672702825 + 672702826.

It is an arithmetic number, because the mean of its divisors is an integer number (672702826).

Almost surely, 2^1345405651 is an apocalyptic number.

1345405651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345405651 is an equidigital number, since it uses as much as digits as its factorization.

1345405651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 1345405651 is about 36679.7716868576. The cubic root of 1345405651 is about 1103.9542671120.

The spelling of 1345405651 in words is "one billion, three hundred forty-five million, four hundred five thousand, six hundred fifty-one".