1345728635 has 4 divisors (see below), whose sum is σ = 1614874368. Its totient is φ = 1076582904.

The previous prime is 1345728613. The next prime is 1345728707. The reversal of 1345728635 is 5368275431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1345728635 - 2⁸ = 1345728379 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134572859 + ... + 134572868.

It is an arithmetic number, because the mean of its divisors is an integer number (403718592).

Almost surely, 2^1345728635 is an apocalyptic number.

1345728635 is a deficient number, since it is larger than the sum of its proper divisors (269145733).

1345728635 is an equidigital number, since it uses as much as digits as its factorization.

1345728635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269145732.

The product of its digits is 604800, while the sum is 44.

The square root of 1345728635 is about 36684.1741763393. The cubic root of 1345728635 is about 1104.0426000833.

The spelling of 1345728635 in words is "one billion, three hundred forty-five million, seven hundred twenty-eight thousand, six hundred thirty-five".