1954 has 4 divisors (see below), whose sum is σ = 2934. Its totient is φ = 976.
The previous prime is 1951. The next prime is 1973. The reversal of 1954 is 4591.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in only one way, i.e., 1225 + 729 = 35^2 + 27^2 .
It is a pancake number, because a pancake can be divided into 1954 parts by 62 straight cuts.
It is a plaindrome in base 12.
It is a nialpdrome in base 13.
It is not an unprimeable number, because it can be changed into a prime (1951) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487 + ... + 490.
21954 is an apocalyptic number.
1954 is a deficient number, since it is larger than the sum of its proper divisors (980).
1954 is an equidigital number, since it uses as much as digits as its factorization.
1954 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 979.
The product of its digits is 180, while the sum is 19.
The square root of 1954 is about 44.2040722106. The cubic root of 1954 is about 12.5018663880.
It can be divided in two parts, 195 and 4, that multiplied together give a triangular number (780 = T39).
The spelling of 1954 in words is "one thousand, nine hundred fifty-four".
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