1345136687 has 8 divisors (see below), whose sum is σ = 1357171200. Its totient is φ = 1333142560.

The previous prime is 1345136671. The next prime is 1345136699. The reversal of 1345136687 is 7866315431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1345136687 - 2⁴ = 1345136671 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 (1345136587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58898 + ... + 78480.

It is an arithmetic number, because the mean of its divisors is an integer number (169646400).

Almost surely, 2^1345136687 is an apocalyptic number.

1345136687 is a deficient number, since it is larger than the sum of its proper divisors (12034513).

1345136687 is a wasteful number, since it uses less digits than its factorization.

1345136687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20193.

The product of its digits is 362880, while the sum is 44.

The square root of 1345136687 is about 36676.1051230907. The cubic root of 1345136687 is about 1103.8806972946.

The spelling of 1345136687 in words is "one billion, three hundred forty-five million, one hundred thirty-six thousand, six hundred eighty-seven".