1131898 has 8 divisors (see below), whose sum is σ = 1723392. Its totient is φ = 557436.

The previous prime is 1131883. The next prime is 1131913. The reversal of 1131898 is 8981311.

It is an interprime number because it is at equal distance from previous prime (1131883) and next prime (1131913).

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

It is a plaindrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4090 + ... + 4357.

It is an arithmetic number, because the mean of its divisors is an integer number (215424).

2^1131898 is an apocalyptic number.

1131898 is a deficient number, since it is larger than the sum of its proper divisors (591494).

1131898 is an equidigital number, since it uses as much as digits as its factorization.

1131898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8516.

The product of its digits is 1728, while the sum is 31.

The square root of 1131898 is about 1063.9069508185. The cubic root of 1131898 is about 104.2163273253.

The spelling of 1131898 in words is "one million, one hundred thirty-one thousand, eight hundred ninety-eight".