1650199972 has 6 divisors (see below), whose sum is σ = 2887849958. Its totient is φ = 825099984.

The previous prime is 1650199961. The next prime is 1650199973. The reversal of 1650199972 is 2799910561.

It can be written as a sum of positive squares in only one way, i.e., 1280637796 + 369562176 = 35786^2 + 19224^2 .

It is not an unprimeable number, because it can be changed into a prime (1650199973) by changing a digit.

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, 206274993 + ... + 206275000.

Almost surely, 2^1650199972 is an apocalyptic number.

It is an amenable number.

1650199972 is a deficient number, since it is larger than the sum of its proper divisors (1237649986).

1650199972 is a wasteful number, since it uses less digits than its factorization.

1650199972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412549997 (or 412549995 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 49.

The square root of 1650199972 is about 40622.6534337677. The cubic root of 1650199972 is about 1181.7134859257.

The spelling of 1650199972 in words is "one billion, six hundred fifty million, one hundred ninety-nine thousand, nine hundred seventy-two".