1954645 has 16 divisors (see below), whose sum is σ = 2924928. Its totient is φ = 1218240.

The previous prime is 1954639. The next prime is 1954649. The reversal of 1954645 is 5464591.

1954645 = T₇₆ + T₇₇ + ... + T₂₂₉.

It is not a de Polignac number, because 1954645 - 2⁵ = 1954613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1954645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1954649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2154 + ... + 2923.

It is an arithmetic number, because the mean of its divisors is an integer number (182808).

2^1954645 is an apocalyptic number.

It is an amenable number.

1954645 is a deficient number, since it is larger than the sum of its proper divisors (970283).

1954645 is a wasteful number, since it uses less digits than its factorization.

1954645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5100.

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

The square root of 1954645 is about 1398.0861919066. The cubic root of 1954645 is about 125.0324182584.

It can be divided in two parts, 19546 and 45, that added together give a palindrome (19591).

The spelling of 1954645 in words is "one million, nine hundred fifty-four thousand, six hundred forty-five".