1655918198741 has 2 divisors, whose sum is σ = 1655918198742. Its totient is φ = 1655918198740.

The previous prime is 1655918198731. The next prime is 1655918198783. The reversal of 1655918198741 is 1478918195561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1478057788516 + 177860410225 = 1215754^2 + 421735^2 .

It is a cyclic number.

It is not a de Polignac number, because 1655918198741 - 2¹⁴ = 1655918182357 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1655918198731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827959099370 + 827959099371.

It is an arithmetic number, because the mean of its divisors is an integer number (827959099371).

Almost surely, 2^{1655918198741} is an apocalyptic number.

It is an amenable number.

1655918198741 is a deficient number, since it is larger than the sum of its proper divisors (1).

1655918198741 is an equidigital number, since it uses as much as digits as its factorization.

1655918198741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21772800, while the sum is 65.

The spelling of 1655918198741 in words is "one trillion, six hundred fifty-five billion, nine hundred eighteen million, one hundred ninety-eight thousand, seven hundred forty-one".