1340982865 has 32 divisors (see below), whose sum is σ = 1732298400. Its totient is φ = 992968704.

The previous prime is 1340982829. The next prime is 1340982871. The reversal of 1340982865 is 5682890431.

1340982865 = T₁₃₀ + T₁₃₁ + ... + T₂₀₀₃.

It can be written as a sum of positive squares in 16 ways, for example, as 1104099984 + 236882881 = 33228^2 + 15391^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1340982865 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1430677 + ... + 1431613.

It is an arithmetic number, because the mean of its divisors is an integer number (54134325).

Almost surely, 2^1340982865 is an apocalyptic number.

It is an amenable number.

1340982865 is a deficient number, since it is larger than the sum of its proper divisors (391315535).

1340982865 is a wasteful number, since it uses less digits than its factorization.

1340982865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221.

The product of its (nonzero) digits is 414720, while the sum is 46.

The square root of 1340982865 is about 36619.4328874711. The cubic root of 1340982865 is about 1102.7432535547.

The spelling of 1340982865 in words is "one billion, three hundred forty million, nine hundred eighty-two thousand, eight hundred sixty-five".