1340161655 has 16 divisors (see below), whose sum is σ = 1838548800. Its totient is φ = 918661632.

The previous prime is 1340161633. The next prime is 1340161661. The reversal of 1340161655 is 5561610431.

It is not a de Polignac number, because 1340161655 - 2⁶ = 1340161591 is a prime.

It is a congruent 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, 164621 + ... + 172569.

It is an arithmetic number, because the mean of its divisors is an integer number (114909300).

Almost surely, 2^1340161655 is an apocalyptic number.

1340161655 is a deficient number, since it is larger than the sum of its proper divisors (498387145).

1340161655 is an equidigital number, since it uses as much as digits as its factorization.

1340161655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12778.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1340161655 is about 36608.2184078931. The cubic root of 1340161655 is about 1102.5181030993.

The spelling of 1340161655 in words is "one billion, three hundred forty million, one hundred sixty-one thousand, six hundred fifty-five".