1340527651 has 4 divisors (see below), whose sum is σ = 1353800304. Its totient is φ = 1327255000.

The previous prime is 1340527631. The next prime is 1340527679. The reversal of 1340527651 is 1567250431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1340527651 - 2⁵ = 1340527619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340527621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6636175 + ... + 6636376.

It is an arithmetic number, because the mean of its divisors is an integer number (338450076).

Almost surely, 2^1340527651 is an apocalyptic number.

1340527651 is a deficient number, since it is larger than the sum of its proper divisors (13272653).

1340527651 is a wasteful number, since it uses less digits than its factorization.

1340527651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13272652.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 1340527651 is about 36613.2168895332. The cubic root of 1340527651 is about 1102.6184592731.

The spelling of 1340527651 in words is "one billion, three hundred forty million, five hundred twenty-seven thousand, six hundred fifty-one".