1988959555486 has 96 divisors (see below), whose sum is σ = 3137869808640. Its totient is φ = 945152208000.

The previous prime is 1988959555483. The next prime is 1988959555489. The reversal of 1988959555486 is 6845559598891.

It is an interprime number because it is at equal distance from previous prime (1988959555483) and next prime (1988959555489).

It is a super-2 number, since 2×1988959555486² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988959555481) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11909937375 + ... + 11909937541.

It is an arithmetic number, because the mean of its divisors is an integer number (32686143840).

Almost surely, 2^{1988959555486} is an apocalyptic number.

1988959555486 is a deficient number, since it is larger than the sum of its proper divisors (1148910253154).

1988959555486 is a wasteful number, since it uses less digits than its factorization.

1988959555486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638 (or 559 counting only the distinct ones).

The product of its digits is 5598720000, while the sum is 82.

The spelling of 1988959555486 in words is "one trillion, nine hundred eighty-eight billion, nine hundred fifty-nine million, five hundred fifty-five thousand, four hundred eighty-six".