1998382047 has 16 divisors (see below), whose sum is σ = 2755614720. Its totient is φ = 1286863200.

The previous prime is 1998382039. The next prime is 1998382063. The reversal of 1998382047 is 7402838991.

It is not a de Polignac number, because 1998382047 - 2³ = 1998382039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1998382007) 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, 30454 + ... + 70172.

It is an arithmetic number, because the mean of its divisors is an integer number (172225920).

Almost surely, 2^1998382047 is an apocalyptic number.

1998382047 is a deficient number, since it is larger than the sum of its proper divisors (757232673).

1998382047 is a wasteful number, since it uses less digits than its factorization.

1998382047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40294.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 1998382047 is about 44703.2666256058. The cubic root of 1998382047 is about 1259.5812093970.

The spelling of 1998382047 in words is "one billion, nine hundred ninety-eight million, three hundred eighty-two thousand, forty-seven".