1640105364 has 96 divisors (see below), whose sum is σ = 4034943360. Its totient is φ = 517957632.

The previous prime is 1640105351. The next prime is 1640105371. The reversal of 1640105364 is 4635010461.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3588624 + ... + 3589080.

It is an arithmetic number, because the mean of its divisors is an integer number (42030660).

Almost surely, 2^1640105364 is an apocalyptic number.

It is an amenable number.

1640105364 is an abundant number, since it is smaller than the sum of its proper divisors (2394837996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1640105364 is a wasteful number, since it uses less digits than its factorization.

1640105364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697 (or 695 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1640105364 is about 40498.2143310048. The cubic root of 1640105364 is about 1179.2989621270.

The spelling of 1640105364 in words is "one billion, six hundred forty million, one hundred five thousand, three hundred sixty-four".