1201913 has 4 divisors (see below), whose sum is σ = 1219920. Its totient is φ = 1183908.

The previous prime is 1201909. The next prime is 1201919. The reversal of 1201913 is 3191021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1201913 - 2² = 1201909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201891 and 1201900.

It is not an unprimeable number, because it can be changed into a prime (1201919) 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, 8903 + ... + 9036.

It is an arithmetic number, because the mean of its divisors is an integer number (304980).

2^1201913 is an apocalyptic number.

It is an amenable number.

1201913 is a deficient number, since it is larger than the sum of its proper divisors (18007).

1201913 is an equidigital number, since it uses as much as digits as its factorization.

1201913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18006.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 1201913 is about 1096.3179283401. The cubic root of 1201913 is about 106.3222954337.

Adding to 1201913 its reverse (3191021), we get a palindrome (4392934).

The spelling of 1201913 in words is "one million, two hundred one thousand, nine hundred thirteen".