1340551856 has 20 divisors (see below), whose sum is σ = 2968365072. Its totient is φ = 574522176.

The previous prime is 1340551853. The next prime is 1340551871. The reversal of 1340551856 is 6581550431.

It is not an unprimeable number, because it can be changed into a prime (1340551853) 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, 5984495 + ... + 5984718.

Almost surely, 2^1340551856 is an apocalyptic number.

1340551856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1340551856 is an abundant number, since it is smaller than the sum of its proper divisors (1627813216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1340551856 is a wasteful number, since it uses less digits than its factorization.

1340551856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11969228 (or 11969222 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 1340551856 is about 36613.5474380727. The cubic root of 1340551856 is about 1102.6250956448.

The spelling of 1340551856 in words is "one billion, three hundred forty million, five hundred fifty-one thousand, eight hundred fifty-six".