1204889156 has 6 divisors (see below), whose sum is σ = 2108556030. Its totient is φ = 602444576.

The previous prime is 1204889131. The next prime is 1204889167. The reversal of 1204889156 is 6519884021.

It can be written as a sum of positive squares in only one way, i.e., 1116228100 + 88661056 = 33410^2 + 9416^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150611141 + ... + 150611148.

It is an arithmetic number, because the mean of its divisors is an integer number (351426005).

Almost surely, 2^1204889156 is an apocalyptic number.

It is an amenable number.

1204889156 is a deficient number, since it is larger than the sum of its proper divisors (903666874).

1204889156 is a wasteful number, since it uses less digits than its factorization.

1204889156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301222293 (or 301222291 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 1204889156 is about 34711.5133061064. The cubic root of 1204889156 is about 1064.0998090270.

The spelling of 1204889156 in words is "one billion, two hundred four million, eight hundred eighty-nine thousand, one hundred fifty-six".