1189129802 has 32 divisors (see below), whose sum is σ = 2072770560. Its totient is φ = 501090480.

The previous prime is 1189129793. The next prime is 1189129853. The reversal of 1189129802 is 2089219811.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1189129802.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 786227 + ... + 787737.

It is an arithmetic number, because the mean of its divisors is an integer number (64774080).

Almost surely, 2^1189129802 is an apocalyptic number.

1189129802 is a deficient number, since it is larger than the sum of its proper divisors (883640758).

1189129802 is a wasteful number, since it uses less digits than its factorization.

1189129802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426.

The product of its (nonzero) digits is 20736, while the sum is 41.

The square root of 1189129802 is about 34483.7614247634. The cubic root of 1189129802 is about 1059.4401345101.

Subtracting 1189129802 from its reverse (2089219811), we obtain a palindrome (900090009).

The spelling of 1189129802 in words is "one billion, one hundred eighty-nine million, one hundred twenty-nine thousand, eight hundred two".