1640970792894 has 16 divisors (see below), whose sum is σ = 3283325815680. Its totient is φ = 546759559320.

The previous prime is 1640970792887. The next prime is 1640970792907. The reversal of 1640970792894 is 4982970790461.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57660834 + ... + 57689285.

It is an arithmetic number, because the mean of its divisors is an integer number (205207863480).

Almost surely, 2^{1640970792894} is an apocalyptic number.

1640970792894 is an abundant number, since it is smaller than the sum of its proper divisors (1642355022786).

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

1640970792894 is a wasteful number, since it uses less digits than its factorization.

1640970792894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115352495.

The product of its (nonzero) digits is 54867456, while the sum is 66.

The spelling of 1640970792894 in words is "one trillion, six hundred forty billion, nine hundred seventy million, seven hundred ninety-two thousand, eight hundred ninety-four".