1854012840529 has 2 divisors, whose sum is σ = 1854012840530. Its totient is φ = 1854012840528.

The previous prime is 1854012840479. The next prime is 1854012840571. The reversal of 1854012840529 is 9250482104581.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1483073374225 + 370939466304 = 1217815^2 + 609048^2 .

It is a cyclic number.

It is not a de Polignac number, because 1854012840529 - 2²⁷ = 1853878622801 is a prime.

It is a super-2 number, since 2×1854012840529² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1854012840829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 927006420264 + 927006420265.

It is an arithmetic number, because the mean of its divisors is an integer number (927006420265).

Almost surely, 2^{1854012840529} is an apocalyptic number.

It is an amenable number.

1854012840529 is a deficient number, since it is larger than the sum of its proper divisors (1).

1854012840529 is an equidigital number, since it uses as much as digits as its factorization.

1854012840529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 921600, while the sum is 49.

The spelling of 1854012840529 in words is "one trillion, eight hundred fifty-four billion, twelve million, eight hundred forty thousand, five hundred twenty-nine".