1345505986 has 8 divisors (see below), whose sum is σ = 2201737104. Its totient is φ = 611593620.

The previous prime is 1345505981. The next prime is 1345506013. The reversal of 1345505986 is 6895055431.

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

It is not an unprimeable number, because it can be changed into a prime (1345505981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30579660 + ... + 30579703.

It is an arithmetic number, because the mean of its divisors is an integer number (275217138).

Almost surely, 2^1345505986 is an apocalyptic number.

1345505986 is a deficient number, since it is larger than the sum of its proper divisors (856231118).

1345505986 is a wasteful number, since it uses less digits than its factorization.

1345505986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61159376.

The product of its (nonzero) digits is 648000, while the sum is 46.

The square root of 1345505986 is about 36681.1393770695. The cubic root of 1345505986 is about 1103.9817092687.

The spelling of 1345505986 in words is "one billion, three hundred forty-five million, five hundred five thousand, nine hundred eighty-six".