1345185451 has 2 divisors, whose sum is σ = 1345185452. Its totient is φ = 1345185450.

The previous prime is 1345185437. The next prime is 1345185467. The reversal of 1345185451 is 1545815431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1345185451 - 2⁵ = 1345185419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1345185451.

It is not a weakly prime, because it can be changed into another prime (1345185151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672592725 + 672592726.

It is an arithmetic number, because the mean of its divisors is an integer number (672592726).

Almost surely, 2^1345185451 is an apocalyptic number.

1345185451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345185451 is an equidigital number, since it uses as much as digits as its factorization.

1345185451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48000, while the sum is 37.

The square root of 1345185451 is about 36676.7699095763. The cubic root of 1345185451 is about 1103.8940364565.

The spelling of 1345185451 in words is "one billion, three hundred forty-five million, one hundred eighty-five thousand, four hundred fifty-one".