1345163765 has 16 divisors (see below), whose sum is σ = 1789814016. Its totient is φ = 962260800.

The previous prime is 1345163761. The next prime is 1345163779. The reversal of 1345163765 is 5673615431.

It is not a de Polignac number, because 1345163765 - 2² = 1345163761 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345163761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197117 + ... + 203826.

It is an arithmetic number, because the mean of its divisors is an integer number (111863376).

Almost surely, 2^1345163765 is an apocalyptic number.

It is an amenable number.

1345163765 is a deficient number, since it is larger than the sum of its proper divisors (444650251).

1345163765 is a wasteful number, since it uses less digits than its factorization.

1345163765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401020.

The product of its digits is 226800, while the sum is 41.

The square root of 1345163765 is about 36676.4742716636. The cubic root of 1345163765 is about 1103.8881043934. Note that the first 3 decimals are identical.

The spelling of 1345163765 in words is "one billion, three hundred forty-five million, one hundred sixty-three thousand, seven hundred sixty-five".