1189529542 has 16 divisors (see below), whose sum is σ = 1988688240. Its totient is φ = 530316288.

The previous prime is 1189529531. The next prime is 1189529573. The reversal of 1189529542 is 2459259811.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1189529492 and 1189529501.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 920043 + ... + 921334.

It is an arithmetic number, because the mean of its divisors is an integer number (124293015).

Almost surely, 2^1189529542 is an apocalyptic number.

1189529542 is a deficient number, since it is larger than the sum of its proper divisors (799158698).

1189529542 is a wasteful number, since it uses less digits than its factorization.

1189529542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841415.

The product of its digits is 259200, while the sum is 46.

The square root of 1189529542 is about 34489.5569991846. The cubic root of 1189529542 is about 1059.5588356400.

The spelling of 1189529542 in words is "one billion, one hundred eighty-nine million, five hundred twenty-nine thousand, five hundred forty-two".