1055918231869 has 2 divisors, whose sum is σ = 1055918231870. Its totient is φ = 1055918231868.

The previous prime is 1055918231821. The next prime is 1055918231887. The reversal of 1055918231869 is 9681328195501.

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., 1055267216644 + 651015225 = 1027262^2 + 25515^2 .

It is a cyclic number.

It is not a de Polignac number, because 1055918231869 - 2¹⁵ = 1055918199101 is a prime.

It is a super-2 number, since 2×1055918231869² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1055918231369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527959115934 + 527959115935.

It is an arithmetic number, because the mean of its divisors is an integer number (527959115935).

Almost surely, 2^{1055918231869} is an apocalyptic number.

It is an amenable number.

1055918231869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055918231869 is an equidigital number, since it uses as much as digits as its factorization.

1055918231869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4665600, while the sum is 58.

The spelling of 1055918231869 in words is "one trillion, fifty-five billion, nine hundred eighteen million, two hundred thirty-one thousand, eight hundred sixty-nine".