1649360423 has 8 divisors (see below), whose sum is σ = 1705094160. Its totient is φ = 1594365120.

The previous prime is 1649360411. The next prime is 1649360473. The reversal of 1649360423 is 3240639461.

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 1649360423 - 2¹⁰ = 1649359399 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 (1649360473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180065 + ... + 189002.

It is an arithmetic number, because the mean of its divisors is an integer number (213136770).

Almost surely, 2^1649360423 is an apocalyptic number.

1649360423 is a deficient number, since it is larger than the sum of its proper divisors (55733737).

1649360423 is a wasteful number, since it uses less digits than its factorization.

1649360423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369217.

The product of its (nonzero) digits is 93312, while the sum is 38.

The square root of 1649360423 is about 40612.3186114755. The cubic root of 1649360423 is about 1181.5130506882.

Adding to 1649360423 its reverse (3240639461), we get a palindrome (4889999884).

The spelling of 1649360423 in words is "one billion, six hundred forty-nine million, three hundred sixty thousand, four hundred twenty-three".