1945654 has 4 divisors (see below), whose sum is σ = 2918484. Its totient is φ = 972826.

The previous prime is 1945651. The next prime is 1945661. The reversal of 1945654 is 4565491.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1945651) 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 as a sum of consecutive naturals, namely, 486412 + ... + 486415.

It is an arithmetic number, because the mean of its divisors is an integer number (729621).

2^1945654 is an apocalyptic number.

1945654 is a deficient number, since it is larger than the sum of its proper divisors (972830).

1945654 is an equidigital number, since it uses as much as digits as its factorization.

1945654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972829.

The product of its digits is 21600, while the sum is 34.

The square root of 1945654 is about 1394.8670187512. The cubic root of 1945654 is about 124.8404150144.

The spelling of 1945654 in words is "one million, nine hundred forty-five thousand, six hundred fifty-four".