1649369699 has 8 divisors (see below), whose sum is σ = 1779343200. Its totient is φ = 1523057536.

The previous prime is 1649369681. The next prime is 1649369713. The reversal of 1649369699 is 9969639461.

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 1649369699 - 2¹² = 1649365603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1649369299) 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, 914399 + ... + 916200.

It is an arithmetic number, because the mean of its divisors is an integer number (222417900).

Almost surely, 2^1649369699 is an apocalyptic number.

1649369699 is a deficient number, since it is larger than the sum of its proper divisors (129973501).

1649369699 is a wasteful number, since it uses less digits than its factorization.

1649369699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830669.

The product of its digits is 17006112, while the sum is 62.

The square root of 1649369699 is about 40612.4328131177. The cubic root of 1649369699 is about 1181.5152656265.

The spelling of 1649369699 in words is "one billion, six hundred forty-nine million, three hundred sixty-nine thousand, six hundred ninety-nine".