1918826969429 has 2 divisors, whose sum is σ = 1918826969430. Its totient is φ = 1918826969428.

The previous prime is 1918826969399. The next prime is 1918826969453. The reversal of 1918826969429 is 9249696288191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1898291506225 + 20535463204 = 1377785^2 + 143302^2 .

It is a cyclic number.

It is not a de Polignac number, because 1918826969429 - 2⁸ = 1918826969173 is a prime.

It is a super-3 number, since 3×1918826969429³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1918826969329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 959413484714 + 959413484715.

It is an arithmetic number, because the mean of its divisors is an integer number (959413484715).

Almost surely, 2^{1918826969429} is an apocalyptic number.

It is an amenable number.

1918826969429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1918826969429 is an equidigital number, since it uses as much as digits as its factorization.

1918826969429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241864704, while the sum is 74.

The spelling of 1918826969429 in words is "one trillion, nine hundred eighteen billion, eight hundred twenty-six million, nine hundred sixty-nine thousand, four hundred twenty-nine".