1340102661 has 16 divisors (see below), whose sum is σ = 1881666240. Its totient is φ = 846011520.

The previous prime is 1340102657. The next prime is 1340102693. The reversal of 1340102661 is 1662010431.

It is not a de Polignac number, because 1340102661 - 2² = 1340102657 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340102651) 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 15 ways as a sum of consecutive naturals, for example, 193881 + ... + 200673.

It is an arithmetic number, because the mean of its divisors is an integer number (117604140).

Almost surely, 2^1340102661 is an apocalyptic number.

It is an amenable number.

1340102661 is a deficient number, since it is larger than the sum of its proper divisors (541563579).

1340102661 is a wasteful number, since it uses less digits than its factorization.

1340102661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10276.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1340102661 is about 36607.4126509919. The cubic root of 1340102661 is about 1102.5019252233.

The spelling of 1340102661 in words is "one billion, three hundred forty million, one hundred two thousand, six hundred sixty-one".