1840151324909 has 2 divisors, whose sum is σ = 1840151324910. Its totient is φ = 1840151324908.

The previous prime is 1840151324863. The next prime is 1840151324939. The reversal of 1840151324909 is 9094231510481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1680328875625 + 159822449284 = 1296275^2 + 399778^2 .

It is a cyclic number.

It is not a de Polignac number, because 1840151324909 - 2³² = 1835856357613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1840151324939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 920075662454 + 920075662455.

It is an arithmetic number, because the mean of its divisors is an integer number (920075662455).

Almost surely, 2^{1840151324909} is an apocalyptic number.

It is an amenable number.

1840151324909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1840151324909 is an equidigital number, since it uses as much as digits as its factorization.

1840151324909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 1840151324909 in words is "one trillion, eight hundred forty billion, one hundred fifty-one million, three hundred twenty-four thousand, nine hundred nine".