1998703964 has 24 divisors (see below), whose sum is σ = 3519328176. Its totient is φ = 993200000.

The previous prime is 1998703963. The next prime is 1998703969. The reversal of 1998703964 is 4693078991.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521174 + ... + 524994.

It is an arithmetic number, because the mean of its divisors is an integer number (146638674).

Almost surely, 2^1998703964 is an apocalyptic number.

It is an amenable number.

1998703964 is a deficient number, since it is larger than the sum of its proper divisors (1520624212).

1998703964 is a wasteful number, since it uses less digits than its factorization.

1998703964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4597 (or 4595 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 56.

The square root of 1998703964 is about 44706.8670787833. The cubic root of 1998703964 is about 1259.6488405813.

The spelling of 1998703964 in words is "one billion, nine hundred ninety-eight million, seven hundred three thousand, nine hundred sixty-four".