1649175149 has 8 divisors (see below), whose sum is σ = 1676210112. Its totient is φ = 1622246080.

The previous prime is 1649175119. The next prime is 1649175191. The reversal of 1649175149 is 9415719461.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1649175149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649175119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5237 + ... + 57669.

It is an arithmetic number, because the mean of its divisors is an integer number (209526264).

Almost surely, 2^1649175149 is an apocalyptic number.

It is an amenable number.

1649175149 is a deficient number, since it is larger than the sum of its proper divisors (27034963).

1649175149 is an equidigital number, since it uses as much as digits as its factorization.

1649175149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52947.

The product of its digits is 272160, while the sum is 47.

The square root of 1649175149 is about 40610.0375399974. The cubic root of 1649175149 is about 1181.4688089238.

The spelling of 1649175149 in words is "one billion, six hundred forty-nine million, one hundred seventy-five thousand, one hundred forty-nine".