1649045 has 8 divisors (see below), whose sum is σ = 2042880. Its totient is φ = 1276560.

The previous prime is 1649023. The next prime is 1649059. The reversal of 1649045 is 5409461.

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

It is not a de Polignac number, because 1649045 - 2⁸ = 1648789 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1648999 and 1649017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5165 + ... + 5474.

It is an arithmetic number, because the mean of its divisors is an integer number (255360).

2^1649045 is an apocalyptic number.

It is an amenable number.

1649045 is a deficient number, since it is larger than the sum of its proper divisors (393835).

1649045 is a wasteful number, since it uses less digits than its factorization.

1649045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10675.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1649045 is about 1284.1514708164. The cubic root of 1649045 is about 118.1437728532.

The spelling of 1649045 in words is "one million, six hundred forty-nine thousand, forty-five".