1649850659 has 8 divisors (see below), whose sum is σ = 1704148992. Its totient is φ = 1595619720.

The previous prime is 1649850649. The next prime is 1649850661. The reversal of 1649850659 is 9560589461.

It is a happy number.

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 1649850659 - 2⁸ = 1649850403 is a prime.

It is a super-3 number, since 3×1649850659³ (a number of 29 digits) contains 333 as substring.

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 1649850659.

It is not an unprimeable number, because it can be changed into a prime (1649850649) 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, 35552 + ... + 67554.

It is an arithmetic number, because the mean of its divisors is an integer number (213018624).

Almost surely, 2^1649850659 is an apocalyptic number.

1649850659 is a deficient number, since it is larger than the sum of its proper divisors (54298333).

1649850659 is a wasteful number, since it uses less digits than its factorization.

1649850659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33697.

The product of its (nonzero) digits is 2332800, while the sum is 53.

The square root of 1649850659 is about 40618.3537209474. The cubic root of 1649850659 is about 1181.6300986555.

The spelling of 1649850659 in words is "one billion, six hundred forty-nine million, eight hundred fifty thousand, six hundred fifty-nine".