1151998 has 8 divisors (see below), whose sum is σ = 1753992. Its totient is φ = 567336.

The previous prime is 1151993. The next prime is 1151999. The reversal of 1151998 is 8991511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151993) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 4165 + ... + 4432.

It is an arithmetic number, because the mean of its divisors is an integer number (219249).

2^1151998 is an apocalyptic number.

1151998 is a deficient number, since it is larger than the sum of its proper divisors (601994).

1151998 is an equidigital number, since it uses as much as digits as its factorization.

1151998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8666.

The product of its digits is 3240, while the sum is 34.

The square root of 1151998 is about 1073.3116975045. The cubic root of 1151998 is about 104.8295951030.

The spelling of 1151998 in words is "one million, one hundred fifty-one thousand, nine hundred ninety-eight".