1988102 has 4 divisors (see below), whose sum is σ = 2982156. Its totient is φ = 994050.

The previous prime is 1988101. The next prime is 1988113. The reversal of 1988102 is 2018891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2018891 = 7 ⋅288413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497024 + ... + 497027.

It is an arithmetic number, because the mean of its divisors is an integer number (745539).

2^1988102 is an apocalyptic number.

1988102 is a deficient number, since it is larger than the sum of its proper divisors (994054).

1988102 is an equidigital number, since it uses as much as digits as its factorization.

1988102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994053.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 1988102 is about 1410.0007092197. Note that the first 3 decimals coincide. The cubic root of 1988102 is about 125.7417655640.

The spelling of 1988102 in words is "one million, nine hundred eighty-eight thousand, one hundred two".