1649935165 has 8 divisors (see below), whose sum is σ = 2043790848. Its totient is φ = 1277369040.

The previous prime is 1649935163. The next prime is 1649935169. The reversal of 1649935165 is 5615399461.

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

It is not a de Polignac number, because 1649935165 - 2¹ = 1649935163 is a prime.

It is a super-4 number, since 4×1649935165⁴ (a number of 38 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649935163) 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 7 ways as a sum of consecutive naturals, for example, 5322217 + ... + 5322526.

It is an arithmetic number, because the mean of its divisors is an integer number (255473856).

Almost surely, 2^1649935165 is an apocalyptic number.

It is an amenable number.

1649935165 is a deficient number, since it is larger than the sum of its proper divisors (393855683).

1649935165 is a wasteful number, since it uses less digits than its factorization.

1649935165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10644779.

The product of its digits is 874800, while the sum is 49.

The square root of 1649935165 is about 40619.3939516581. The cubic root of 1649935165 is about 1181.6502728306.

The spelling of 1649935165 in words is "one billion, six hundred forty-nine million, nine hundred thirty-five thousand, one hundred sixty-five".