1640202716 has 12 divisors (see below), whose sum is σ = 2902606560. Its totient is φ = 810886560.

The previous prime is 1640202673. The next prime is 1640202743. The reversal of 1640202716 is 6172020461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2303300 + ... + 2304011.

It is an arithmetic number, because the mean of its divisors is an integer number (241883880).

Almost surely, 2^1640202716 is an apocalyptic number.

It is an amenable number.

1640202716 is a deficient number, since it is larger than the sum of its proper divisors (1262403844).

1640202716 is a wasteful number, since it uses less digits than its factorization.

1640202716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4607404 (or 4607402 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 1640202716 is about 40499.4162427065. The cubic root of 1640202716 is about 1179.3222949453.

The spelling of 1640202716 in words is "one billion, six hundred forty million, two hundred two thousand, seven hundred sixteen".