1189542419 has 8 divisors (see below), whose sum is σ = 1284721200. Its totient is φ = 1094888736.

The previous prime is 1189542413. The next prime is 1189542427. The reversal of 1189542419 is 9142459811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1189542419 - 2⁸ = 1189542163 is a prime.

It is a super-2 number, since 2×1189542419² = 2830022333200743122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1189542419.

It is not an unprimeable number, because it can be changed into a prime (1189542413) by changing a digit.

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, 126557 + ... + 135630.

It is an arithmetic number, because the mean of its divisors is an integer number (160590150).

Almost surely, 2^1189542419 is an apocalyptic number.

1189542419 is a deficient number, since it is larger than the sum of its proper divisors (95178781).

1189542419 is a wasteful number, since it uses less digits than its factorization.

1189542419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262549.

The product of its digits is 103680, while the sum is 44.

The square root of 1189542419 is about 34489.7436783749. The cubic root of 1189542419 is about 1059.5626589694.

The spelling of 1189542419 in words is "one billion, one hundred eighty-nine million, five hundred forty-two thousand, four hundred nineteen".