1649383703 has 4 divisors (see below), whose sum is σ = 1799327688. Its totient is φ = 1499439720.

The previous prime is 1649383699. The next prime is 1649383717. The reversal of 1649383703 is 3073839461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1649383703 - 2² = 1649383699 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 (1649383783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74971976 + ... + 74971997.

It is an arithmetic number, because the mean of its divisors is an integer number (449831922).

Almost surely, 2^1649383703 is an apocalyptic number.

1649383703 is a deficient number, since it is larger than the sum of its proper divisors (149943985).

1649383703 is a wasteful number, since it uses less digits than its factorization.

1649383703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149943984.

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 1649383703 is about 40612.6052230093. The cubic root of 1649383703 is about 1181.5186095085.

The spelling of 1649383703 in words is "one billion, six hundred forty-nine million, three hundred eighty-three thousand, seven hundred three".