1451998 has 4 divisors (see below), whose sum is σ = 2178000. Its totient is φ = 725998.

The previous prime is 1451969. The next prime is 1452047. The reversal of 1451998 is 8991541.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362998 + ... + 363001.

It is an arithmetic number, because the mean of its divisors is an integer number (544500).

2^1451998 is an apocalyptic number.

1451998 is a deficient number, since it is larger than the sum of its proper divisors (726002).

1451998 is an equidigital number, since it uses as much as digits as its factorization.

1451998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726001.

The product of its digits is 12960, while the sum is 37.

The square root of 1451998 is about 1204.9887966284. The cubic root of 1451998 is about 113.2370828327.

The spelling of 1451998 in words is "one million, four hundred fifty-one thousand, nine hundred ninety-eight".