1011042404389 has 2 divisors, whose sum is σ = 1011042404390. Its totient is φ = 1011042404388.

The previous prime is 1011042404381. The next prime is 1011042404461. The reversal of 1011042404389 is 9834042401101.

1011042404389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 943699559364 + 67342845025 = 971442^2 + 259505^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011042404389 - 2³ = 1011042404381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011042404381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505521202194 + 505521202195.

It is an arithmetic number, because the mean of its divisors is an integer number (505521202195).

Almost surely, 2^{1011042404389} is an apocalyptic number.

It is an amenable number.

1011042404389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011042404389 is an equidigital number, since it uses as much as digits as its factorization.

1011042404389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 37.

The spelling of 1011042404389 in words is "one trillion, eleven billion, forty-two million, four hundred four thousand, three hundred eighty-nine".