1988146 has 4 divisors (see below), whose sum is σ = 2982222. Its totient is φ = 994072.

The previous prime is 1988137. The next prime is 1988177. The reversal of 1988146 is 6418891.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6418891 = 31 ⋅207061.

It can be written as a sum of positive squares in only one way, i.e., 1010025 + 978121 = 1005^2 + 989^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497035 + ... + 497038.

2^1988146 is an apocalyptic number.

1988146 is a deficient number, since it is larger than the sum of its proper divisors (994076).

1988146 is an equidigital number, since it uses as much as digits as its factorization.

1988146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994075.

The product of its digits is 13824, while the sum is 37.

The square root of 1988146 is about 1410.0163119624. The cubic root of 1988146 is about 125.7426931819.

The spelling of 1988146 in words is "one million, nine hundred eighty-eight thousand, one hundred forty-six".