1682757649 has 16 divisors (see below), whose sum is σ = 1726800768. Its totient is φ = 1639475712.

The previous prime is 1682757647. The next prime is 1682757673. The reversal of 1682757649 is 9467572861.

It is a cyclic number.

It is not a de Polignac number, because 1682757649 - 2¹ = 1682757647 is a prime.

It is a super-3 number, since 3×1682757649³ (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 1682757649.

It is not an unprimeable number, because it can be changed into a prime (1682757641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2044252 + ... + 2045074.

It is an arithmetic number, because the mean of its divisors is an integer number (107925048).

Almost surely, 2^1682757649 is an apocalyptic number.

It is an amenable number.

1682757649 is a deficient number, since it is larger than the sum of its proper divisors (44043119).

1682757649 is a wasteful number, since it uses less digits than its factorization.

1682757649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224.

The product of its digits is 5080320, while the sum is 55.

The square root of 1682757649 is about 41021.4291438024. The cubic root of 1682757649 is about 1189.4344814290.

The spelling of 1682757649 in words is "one billion, six hundred eighty-two million, seven hundred fifty-seven thousand, six hundred forty-nine".