1340554109 has 2 divisors, whose sum is σ = 1340554110. Its totient is φ = 1340554108.

The previous prime is 1340554093. The next prime is 1340554121. The reversal of 1340554109 is 9014550431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1314062500 + 26491609 = 36250^2 + 5147^2 .

It is an emirp because it is prime and its reverse (9014550431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1340554109 - 2⁴ = 1340554093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340554169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670277054 + 670277055.

It is an arithmetic number, because the mean of its divisors is an integer number (670277055).

Almost surely, 2^1340554109 is an apocalyptic number.

It is an amenable number.

1340554109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340554109 is an equidigital number, since it uses as much as digits as its factorization.

1340554109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1340554109 is about 36613.5782053598. The cubic root of 1340554109 is about 1102.6257133538.

The spelling of 1340554109 in words is "one billion, three hundred forty million, five hundred fifty-four thousand, one hundred nine".