1340904574 has 4 divisors (see below), whose sum is σ = 2011356864. Its totient is φ = 670452286.

The previous prime is 1340904571. The next prime is 1340904599. The reversal of 1340904574 is 4754090431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4754090431 = 20143 ⋅236017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340904571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335226142 + ... + 335226145.

It is an arithmetic number, because the mean of its divisors is an integer number (502839216).

Almost surely, 2^1340904574 is an apocalyptic number.

1340904574 is a deficient number, since it is larger than the sum of its proper divisors (670452290).

1340904574 is an equidigital number, since it uses as much as digits as its factorization.

1340904574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670452289.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 1340904574 is about 36618.3638902669. The cubic root of 1340904574 is about 1102.7217925417.

The spelling of 1340904574 in words is "one billion, three hundred forty million, nine hundred four thousand, five hundred seventy-four".