1999773902 has 32 divisors (see below), whose sum is σ = 3620294400. Its totient is φ = 809310528.

The previous prime is 1999773827. The next prime is 1999773911. The reversal of 1999773902 is 2093779991.

It is a congruent number.

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, 71249 + ... + 95267.

It is an arithmetic number, because the mean of its divisors is an integer number (113134200).

Almost surely, 2^1999773902 is an apocalyptic number.

1999773902 is a deficient number, since it is larger than the sum of its proper divisors (1620520498).

1999773902 is a wasteful number, since it uses less digits than its factorization.

1999773902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24360.

The product of its (nonzero) digits is 1928934, while the sum is 56.

The square root of 1999773902 is about 44718.8316260611. The cubic root of 1999773902 is about 1259.8735705007.

The spelling of 1999773902 in words is "one billion, nine hundred ninety-nine million, seven hundred seventy-three thousand, nine hundred two".