1988526044 has 6 divisors (see below), whose sum is σ = 3479920584. Its totient is φ = 994263020.

The previous prime is 1988526041. The next prime is 1988526049. The reversal of 1988526044 is 4406258891.

It is a self number, because there is not a number n which added to its sum of digits gives 1988526044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988526041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248565752 + ... + 248565759.

It is an arithmetic number, because the mean of its divisors is an integer number (579986764).

Almost surely, 2^1988526044 is an apocalyptic number.

It is an amenable number.

1988526044 is a deficient number, since it is larger than the sum of its proper divisors (1491394540).

1988526044 is a wasteful number, since it uses less digits than its factorization.

1988526044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497131515 (or 497131513 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 47.

The square root of 1988526044 is about 44592.8923035948. The cubic root of 1988526044 is about 1257.5070478521.

The spelling of 1988526044 in words is "one billion, nine hundred eighty-eight million, five hundred twenty-six thousand, forty-four".