1649396710845 has 48 divisors (see below), whose sum is σ = 3131058228480. Its totient is φ = 798247778688.

The previous prime is 1649396710823. The next prime is 1649396710939. The reversal of 1649396710845 is 5480176939461.

1649396710845 is a `hidden beast` number, since 1 + 6 + 493 + 9 + 67 + 1 + 0 + 84 + 5 = 666.

It is not a de Polignac number, because 1649396710845 - 2¹⁴ = 1649396694461 is a prime.

It is a super-2 number, since 2×1649396710845² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23859397 + ... + 23928426.

It is an arithmetic number, because the mean of its divisors is an integer number (65230379760).

Almost surely, 2^{1649396710845} is an apocalyptic number.

1649396710845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1649396710845 is a deficient number, since it is larger than the sum of its proper divisors (1481661517635).

1649396710845 is a wasteful number, since it uses less digits than its factorization.

1649396710845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47787906 (or 47787903 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 63.

The spelling of 1649396710845 in words is "one trillion, six hundred forty-nine billion, three hundred ninety-six million, seven hundred ten thousand, eight hundred forty-five".