1955913 has 4 divisors (see below), whose sum is σ = 2607888. Its totient is φ = 1303940.

The previous prime is 1955893. The next prime is 1955939. The reversal of 1955913 is 3195591.

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 1955913 - 2¹⁰ = 1954889 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1955983) 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 3 ways as a sum of consecutive naturals, for example, 325983 + ... + 325988.

It is an arithmetic number, because the mean of its divisors is an integer number (651972).

2^1955913 is an apocalyptic number.

It is an amenable number.

1955913 is a deficient number, since it is larger than the sum of its proper divisors (651975).

1955913 is an equidigital number, since it uses as much as digits as its factorization.

1955913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651974.

The product of its digits is 6075, while the sum is 33.

The square root of 1955913 is about 1398.5395954352. The cubic root of 1955913 is about 125.0594490553.

The spelling of 1955913 in words is "one million, nine hundred fifty-five thousand, nine hundred thirteen".