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1946 = 27139
BaseRepresentation
bin11110011010
32200002
4132122
530241
613002
75450
oct3632
92602
101946
11150a
121162
13b69
149d0
1589b
hex79a

1946 has 8 divisors (see below), whose sum is σ = 3360. Its totient is φ = 828.

The previous prime is 1933. The next prime is 1949. The reversal of 1946 is 6491.

1946 = T20 + T21 + ... + T26.

1946 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is an Ulam number.

1946 is strictly pandigital in base 5.

It is a plaindrome in base 15 and base 16.

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, 56 + ... + 83.

It is an arithmetic number, because the mean of its divisors is an integer number (420).

21946 is an apocalyptic number.

1946 is a deficient number, since it is larger than the sum of its proper divisors (1414).

1946 is a wasteful number, since it uses less digits than its factorization.

1946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148.

The product of its digits is 216, while the sum is 20.

The square root of 1946 is about 44.1134900002. The cubic root of 1946 is about 12.4847814792.

The spelling of 1946 in words is "one thousand, nine hundred forty-six".

Divisors: 1 2 7 14 139 278 973 1946