1189426141 has 2 divisors, whose sum is σ = 1189426142. Its totient is φ = 1189426140.

The previous prime is 1189426111. The next prime is 1189426187. The reversal of 1189426141 is 1416249811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 610831225 + 578594916 = 24715^2 + 24054^2 .

It is a cyclic number.

It is not a de Polignac number, because 1189426141 - 2⁵ = 1189426109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1189426141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1189426111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594713070 + 594713071.

It is an arithmetic number, because the mean of its divisors is an integer number (594713071).

Almost surely, 2^1189426141 is an apocalyptic number.

It is an amenable number.

1189426141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1189426141 is an equidigital number, since it uses as much as digits as its factorization.

1189426141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 37.

The square root of 1189426141 is about 34488.0579476433. The cubic root of 1189426141 is about 1059.5281336933.

The spelling of 1189426141 in words is "one billion, one hundred eighty-nine million, four hundred twenty-six thousand, one hundred forty-one".