1654 has 4 divisors (see below), whose sum is σ = 2484. Its totient is φ = 826.

The previous prime is 1637. The next prime is 1657. The reversal of 1654 is 4561.

1654 is nontrivially palindromic in base 16.

1654 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

1654 is an esthetic number in base 16, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes.

It is an alternating number because its digits alternate between odd and even.

It is a pancake number, because a pancake can be divided into 1654 parts by 57 straight cuts.

1654 is an undulating number in base 16.

1654 is strictly pandigital in base 5.

It is a plaindrome in base 9.

It is a nialpdrome in base 14 and base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1657) 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 as a sum of consecutive naturals, namely, 412 + ... + 415.

It is an arithmetic number, because the mean of its divisors is an integer number (621).

1654 is a deficient number, since it is larger than the sum of its proper divisors (830).

1654 is an equidigital number, since it uses as much as digits as its factorization.

1654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829.

The product of its digits is 120, while the sum is 16.

The square root of 1654 is about 40.6693988153. The cubic root of 1654 is about 11.8261986130.

It can be divided in two parts, 165 and 4, that added together give a square (169 = 13²).

The spelling of 1654 in words is "one thousand, six hundred fifty-four".