1198815 has 16 divisors (see below), whose sum is σ = 1932000. Its totient is φ = 634752.

The previous prime is 1198811. The next prime is 1198819. The reversal of 1198815 is 5188911.

It is an interprime number because it is at equal distance from previous prime (1198811) and next prime (1198819).

It is not a de Polignac number, because 1198815 - 2² = 1198811 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3261 + ... + 3609.

It is an arithmetic number, because the mean of its divisors is an integer number (120750).

2^1198815 is an apocalyptic number.

1198815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1198815 is a deficient number, since it is larger than the sum of its proper divisors (733185).

1198815 is a wasteful number, since it uses less digits than its factorization.

1198815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586.

The product of its digits is 2880, while the sum is 33.

The square root of 1198815 is about 1094.9041053901. The cubic root of 1198815 is about 106.2308662201.

The spelling of 1198815 in words is "one million, one hundred ninety-eight thousand, eight hundred fifteen".