1984872897 has 32 divisors (see below), whose sum is σ = 3476524800. Its totient is φ = 1095099264.

The previous prime is 1984872871. The next prime is 1984872899. The reversal of 1984872897 is 7982784891.

It is not a de Polignac number, because 1984872897 - 2⁸ = 1984872641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (1984872899) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175588 + ... + 186549.

It is an arithmetic number, because the mean of its divisors is an integer number (108641400).

Almost surely, 2^1984872897 is an apocalyptic number.

It is an amenable number.

1984872897 is a deficient number, since it is larger than the sum of its proper divisors (1491651903).

1984872897 is a wasteful number, since it uses less digits than its factorization.

1984872897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362182 (or 362176 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 63.

The square root of 1984872897 is about 44551.9123831963. The cubic root of 1984872897 is about 1256.7365149686.

The spelling of 1984872897 in words is "one billion, nine hundred eighty-four million, eight hundred seventy-two thousand, eight hundred ninety-seven".