1340004641 has 2 divisors, whose sum is σ = 1340004642. Its totient is φ = 1340004640.

The previous prime is 1340004529. The next prime is 1340004643. The reversal of 1340004641 is 1464000431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 784224016 + 555780625 = 28004^2 + 23575^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340004641 - 2¹⁰ = 1340003617 is a prime.

It is a super-2 number, since 2×1340004641² = 3591224875803077762, which contains 22 as substring.

Together with 1340004643, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1340004643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670002320 + 670002321.

It is an arithmetic number, because the mean of its divisors is an integer number (670002321).

Almost surely, 2^1340004641 is an apocalyptic number.

It is an amenable number.

1340004641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340004641 is an equidigital number, since it uses as much as digits as its factorization.

1340004641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1340004641 is about 36606.0738266206. The cubic root of 1340004641 is about 1102.4750442296.

The spelling of 1340004641 in words is "one billion, three hundred forty million, four thousand, six hundred forty-one".