1999474072 has 8 divisors (see below), whose sum is σ = 3749013900. Its totient is φ = 999737032.

The previous prime is 1999474039. The next prime is 1999474109. The reversal of 1999474072 is 2704749991.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1999474072² = 7995793129200522368, which contains 22 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 124967122 + ... + 124967137.

Almost surely, 2^1999474072 is an apocalyptic number.

It is an amenable number.

1999474072 is a deficient number, since it is larger than the sum of its proper divisors (1749539828).

1999474072 is a wasteful number, since it uses less digits than its factorization.

1999474072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249934265 (or 249934261 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 52.

The square root of 1999474072 is about 44715.4791095880. The cubic root of 1999474072 is about 1259.8106022534.

The spelling of 1999474072 in words is "one billion, nine hundred ninety-nine million, four hundred seventy-four thousand, seventy-two".