1340174845 has 4 divisors (see below), whose sum is σ = 1608209820. Its totient is φ = 1072139872.

The previous prime is 1340174839. The next prime is 1340174897. The reversal of 1340174845 is 5484710431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5484710431 = 881 ⋅6225551.

It can be written as a sum of positive squares in 2 ways, for example, as 849197881 + 490976964 = 29141^2 + 22158^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340174845 - 2³ = 1340174837 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134017480 + ... + 134017489.

It is an arithmetic number, because the mean of its divisors is an integer number (402052455).

Almost surely, 2^1340174845 is an apocalyptic number.

It is an amenable number.

1340174845 is a deficient number, since it is larger than the sum of its proper divisors (268034975).

1340174845 is an equidigital number, since it uses as much as digits as its factorization.

1340174845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268034974.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 1340174845 is about 36608.3985582544. The cubic root of 1340174845 is about 1102.5217201172.

The spelling of 1340174845 in words is "one billion, three hundred forty million, one hundred seventy-four thousand, eight hundred forty-five".