1649760962689 has 8 divisors (see below), whose sum is σ = 1895974292160. Its totient is φ = 1406180931216.

The previous prime is 1649760962671. The next prime is 1649760962737. The reversal of 1649760962689 is 9862690679461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1649760962689 is a prime.

It is a super-2 number, since 2×1649760962689² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1649760962609) 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, 658323154 + ... + 658325659.

It is an arithmetic number, because the mean of its divisors is an integer number (236996786520).

Almost surely, 2^{1649760962689} is an apocalyptic number.

It is an amenable number.

1649760962689 is a deficient number, since it is larger than the sum of its proper divisors (246213329471).

1649760962689 is a wasteful number, since it uses less digits than its factorization.

1649760962689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316648999.

The product of its (nonzero) digits is 423263232, while the sum is 73.

The spelling of 1649760962689 in words is "one trillion, six hundred forty-nine billion, seven hundred sixty million, nine hundred sixty-two thousand, six hundred eighty-nine".