1098137 has 4 divisors (see below), whose sum is σ = 1109556. Its totient is φ = 1086720.

The previous prime is 1098133. The next prime is 1098151. The reversal of 1098137 is 7318901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7318901 = 43 ⋅170207.

It can be written as a sum of positive squares in 2 ways, for example, as 259081 + 839056 = 509^2 + 916^2 .

It is a cyclic number.

It is not a de Polignac number, because 1098137 - 2² = 1098133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1098133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5564 + ... + 5757.

It is an arithmetic number, because the mean of its divisors is an integer number (277389).

2^1098137 is an apocalyptic number.

It is an amenable number.

1098137 is a deficient number, since it is larger than the sum of its proper divisors (11419).

1098137 is an equidigital number, since it uses as much as digits as its factorization.

1098137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11418.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 1098137 is about 1047.9203213985. The cubic root of 1098137 is about 103.1697017100.

It can be divided in two parts, 1098 and 137, that multiplied together give a triangular number (150426 = T₅₄₈).

The spelling of 1098137 in words is "one million, ninety-eight thousand, one hundred thirty-seven".