1988927485650 has 1152 divisors, whose sum is σ = 7093603123200. Its totient is φ = 406628812800.

The previous prime is 1988927485613. The next prime is 1988927485661. The reversal of 1988927485650 is 565847298891.

1988927485650 is a `hidden beast` number, since 1 + 9 + 8 + 8 + 92 + 7 + 485 + 6 + 50 = 666.

It is a super-4 number, since 4×1988927485650⁴ (a number of 50 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 2056801467 + ... + 2056802433.

It is an arithmetic number, because the mean of its divisors is an integer number (6157641600).

Almost surely, 2^{1988927485650} is an apocalyptic number.

1988927485650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1988927485650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3546801561600).

1988927485650 is an abundant number, since it is smaller than the sum of its proper divisors (5104675637550).

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

1988927485650 is a wasteful number, since it uses less digits than its factorization.

1988927485650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109 (or 1091 counting only the distinct ones).

The product of its (nonzero) digits is 348364800, while the sum is 72.

The spelling of 1988927485650 in words is "one trillion, nine hundred eighty-eight billion, nine hundred twenty-seven million, four hundred eighty-five thousand, six hundred fifty".