1340345555 has 16 divisors (see below), whose sum is σ = 1649477088. Its totient is φ = 1044960000.

The previous prime is 1340345533. The next prime is 1340345563. The reversal of 1340345555 is 5555430431.

It is not a de Polignac number, because 1340345555 - 2²² = 1336151251 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212345 + ... + 218565.

It is an arithmetic number, because the mean of its divisors is an integer number (103092318).

Almost surely, 2^1340345555 is an apocalyptic number.

1340345555 is a deficient number, since it is larger than the sum of its proper divisors (309131533).

1340345555 is a wasteful number, since it uses less digits than its factorization.

1340345555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7318.

The product of its (nonzero) digits is 90000, while the sum is 35.

The square root of 1340345555 is about 36610.7300528138. The cubic root of 1340345555 is about 1102.5685307983.

Adding to 1340345555 its reverse (5555430431), we get a palindrome (6895775986).

The spelling of 1340345555 in words is "one billion, three hundred forty million, three hundred forty-five thousand, five hundred fifty-five".