1201898 has 4 divisors (see below), whose sum is σ = 1802850. Its totient is φ = 600948.

The previous prime is 1201873. The next prime is 1201909. The reversal of 1201898 is 8981021.

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

It can be written as a sum of positive squares in only one way, i.e., 628849 + 573049 = 793^2 + 757^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1201898.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300473 + ... + 300476.

2^1201898 is an apocalyptic number.

1201898 is a deficient number, since it is larger than the sum of its proper divisors (600952).

1201898 is an equidigital number, since it uses as much as digits as its factorization.

1201898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600951.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 1201898 is about 1096.3110872376. The cubic root of 1201898 is about 106.3218531274.

The spelling of 1201898 in words is "one million, two hundred one thousand, eight hundred ninety-eight".