1988959555492 has 48 divisors (see below), whose sum is σ = 4509382003840. Its totient is φ = 745428448512.

The previous prime is 1988959555489. The next prime is 1988959555507. The reversal of 1988959555492 is 2945559598891.

It is a super-2 number, since 2×1988959555492² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143787153 + ... + 143800984.

Almost surely, 2^{1988959555492} is an apocalyptic number.

It is an amenable number.

1988959555492 is an abundant number, since it is smaller than the sum of its proper divisors (2520422448348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1988959555492 is a wasteful number, since it uses less digits than its factorization.

1988959555492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287588180 (or 287588178 counting only the distinct ones).

The product of its digits is 2099520000, while the sum is 79.

The spelling of 1988959555492 in words is "one trillion, nine hundred eighty-eight billion, nine hundred fifty-nine million, five hundred fifty-five thousand, four hundred ninety-two".