1999539116 has 12 divisors (see below), whose sum is σ = 3705028488. Its totient is φ = 940959552.

The previous prime is 1999539107. The next prime is 1999539121. The reversal of 1999539116 is 6119359991.

It is a happy number.

It is a super-2 number, since 2×1999539116² = 7996313352828122912, which contains 22 as substring.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14702426 + ... + 14702561.

It is an arithmetic number, because the mean of its divisors is an integer number (308752374).

Almost surely, 2^1999539116 is an apocalyptic number.

It is an amenable number.

1999539116 is a deficient number, since it is larger than the sum of its proper divisors (1705489372).

1999539116 is a wasteful number, since it uses less digits than its factorization.

1999539116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29405008 (or 29405006 counting only the distinct ones).

The product of its digits is 590490, while the sum is 53.

The square root of 1999539116 is about 44716.2064133352. The cubic root of 1999539116 is about 1259.8242628844.

The spelling of 1999539116 in words is "one billion, nine hundred ninety-nine million, five hundred thirty-nine thousand, one hundred sixteen".