1340645574 has 16 divisors (see below), whose sum is σ = 2797869312. Its totient is φ = 427452168.

The previous prime is 1340645573. The next prime is 1340645591. The reversal of 1340645574 is 4755460431.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340645573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4857274 + ... + 4857549.

It is an arithmetic number, because the mean of its divisors is an integer number (174866832).

Almost surely, 2^1340645574 is an apocalyptic number.

1340645574 is an abundant number, since it is smaller than the sum of its proper divisors (1457223738).

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

1340645574 is a wasteful number, since it uses less digits than its factorization.

1340645574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9714851.

The product of its (nonzero) digits is 201600, while the sum is 39.

The square root of 1340645574 is about 36614.8272425257. The cubic root of 1340645574 is about 1102.6507898916.

The spelling of 1340645574 in words is "one billion, three hundred forty million, six hundred forty-five thousand, five hundred seventy-four".