1189989202 has 8 divisors (see below), whose sum is σ = 1786127616. Its totient is φ = 594613332.

The previous prime is 1189989191. The next prime is 1189989253. The reversal of 1189989202 is 2029899811.

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

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 3 ways as a sum of consecutive naturals, for example, 186718 + ... + 192985.

It is an arithmetic number, because the mean of its divisors is an integer number (223265952).

Almost surely, 2^1189989202 is an apocalyptic number.

1189989202 is a deficient number, since it is larger than the sum of its proper divisors (596138414).

1189989202 is a wasteful number, since it uses less digits than its factorization.

1189989202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381272.

The product of its (nonzero) digits is 186624, while the sum is 49.

The square root of 1189989202 is about 34496.2201117746. The cubic root of 1189989202 is about 1059.6952968982.

It can be divided in two parts, 11899 and 89202, that added together give a palindrome (101101).

The spelling of 1189989202 in words is "one billion, one hundred eighty-nine million, nine hundred eighty-nine thousand, two hundred two".