Search a number
1941 = 3647

1941 has 4 divisors (see below), whose sum is σ = 2592. Its totient is φ = 1292.

The previous prime is 1933. The next prime is 1949. The reversal of 1941 is 1491.

1941 is nontrivially palindromic in base 14.

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 an interprime number because it is at equal distance from previous prime (1933) and next prime (1949).

It is a cyclic number.

It is not a de Polignac number, because 1941 - 23 = 1933 is a prime.

It is an Ulam number.

It is a D-number.

1941 is an undulating number in base 14.

1941 is a lucky number.

It is a plaindrome in base 12.

It is a nialpdrome in base 7 and base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 1941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321 + ... + 326.

It is an arithmetic number, because the mean of its divisors is an integer number (648).

It is an amenable number.

1941 is a deficient number, since it is larger than the sum of its proper divisors (651).

1941 is an equidigital number, since it uses as much as digits as its factorization.

1941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650.

The product of its digits is 36, while the sum is 15.

The square root of 1941 is about 44.0567815438. The cubic root of 1941 is about 12.4740796212.

The spelling of 1941 in words is "one thousand, nine hundred forty-one".

Divisors: 1 3 647 1941