1340774473 has 2 divisors, whose sum is σ = 1340774474. Its totient is φ = 1340774472.

The previous prime is 1340774467. The next prime is 1340774483. The reversal of 1340774473 is 3744770431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1304437689 + 36336784 = 36117^2 + 6028^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340774473 - 2²⁹ = 803903561 is a prime.

It is not a weakly prime, because it can be changed into another prime (1340774423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670387236 + 670387237.

It is an arithmetic number, because the mean of its divisors is an integer number (670387237).

Almost surely, 2^1340774473 is an apocalyptic number.

It is an amenable number.

1340774473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340774473 is an equidigital number, since it uses as much as digits as its factorization.

1340774473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 197568, while the sum is 40.

The square root of 1340774473 is about 36616.5874024328. The cubic root of 1340774473 is about 1102.6861276005.

The spelling of 1340774473 in words is "one billion, three hundred forty million, seven hundred seventy-four thousand, four hundred seventy-three".