1201863 has 8 divisors (see below), whose sum is σ = 1725808. Its totient is φ = 739584.

The previous prime is 1201853. The next prime is 1201873. The reversal of 1201863 is 3681021.

It is an interprime number because it is at equal distance from previous prime (1201853) and next prime (1201873).

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

It is not a de Polignac number, because 1201863 - 2¹⁰ = 1200839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201813) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 15370 + ... + 15447.

It is an arithmetic number, because the mean of its divisors is an integer number (215726).

2^1201863 is an apocalyptic number.

1201863 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1201863 is a deficient number, since it is larger than the sum of its proper divisors (523945).

1201863 is a wasteful number, since it uses less digits than its factorization.

1201863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30833.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1201863 is about 1096.2951244989. The cubic root of 1201863 is about 106.3208210651.

Adding to 1201863 its reverse (3681021), we get a palindrome (4882884).

The spelling of 1201863 in words is "one million, two hundred one thousand, eight hundred sixty-three".