1988201944 has 8 divisors (see below), whose sum is σ = 3727878660. Its totient is φ = 994100968.

The previous prime is 1988201909. The next prime is 1988201959. The reversal of 1988201944 is 4491028891.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1988201894 and 1988201903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124262614 + ... + 124262629.

Almost surely, 2^1988201944 is an apocalyptic number.

It is an amenable number.

1988201944 is a deficient number, since it is larger than the sum of its proper divisors (1739676716).

1988201944 is a wasteful number, since it uses less digits than its factorization.

1988201944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248525249 (or 248525245 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 1988201944 is about 44589.2581683078. The cubic root of 1988201944 is about 1257.4387258606.

The spelling of 1988201944 in words is "one billion, nine hundred eighty-eight million, two hundred one thousand, nine hundred forty-four".