1998703965 has 16 divisors (see below), whose sum is σ = 3199176000. Its totient is φ = 1065558912.

The previous prime is 1998703963. The next prime is 1998703969. The reversal of 1998703965 is 5693078991.

It is not a de Polignac number, because 1998703965 - 2¹ = 1998703963 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1998703961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15801 + ... + 65169.

It is an arithmetic number, because the mean of its divisors is an integer number (199948500).

Almost surely, 2^1998703965 is an apocalyptic number.

1998703965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1998703965 is a deficient number, since it is larger than the sum of its proper divisors (1200472035).

1998703965 is a wasteful number, since it uses less digits than its factorization.

1998703965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52076.

The product of its (nonzero) digits is 3674160, while the sum is 57.

The square root of 1998703965 is about 44706.8670899673. The cubic root of 1998703965 is about 1259.6488407913.

The spelling of 1998703965 in words is "one billion, nine hundred ninety-eight million, seven hundred three thousand, nine hundred sixty-five".