1649266085 has 8 divisors (see below), whose sum is σ = 1980240000. Its totient is φ = 1318665744.

The previous prime is 1649266081. The next prime is 1649266121. The reversal of 1649266085 is 5806629461.

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

It is a cyclic number.

It is not a de Polignac number, because 1649266085 - 2² = 1649266081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649266081) 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, 83585 + ... + 101414.

It is an arithmetic number, because the mean of its divisors is an integer number (247530000).

Almost surely, 2^1649266085 is an apocalyptic number.

It is an amenable number.

1649266085 is a deficient number, since it is larger than the sum of its proper divisors (330973915).

1649266085 is a wasteful number, since it uses less digits than its factorization.

1649266085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186787.

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 1649266085 is about 40611.1571492367. The cubic root of 1649266085 is about 1181.4905240365.

The spelling of 1649266085 in words is "one billion, six hundred forty-nine million, two hundred sixty-six thousand, eighty-five".