2954640639638 has 24 divisors (see below), whose sum is σ = 4633976904816. Its totient is φ = 1412801082000.

The previous prime is 2954640639611. The next prime is 2954640639649. The reversal of 2954640639638 is 8369360464592.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4956128 + ... + 5520188.

It is an arithmetic number, because the mean of its divisors is an integer number (193082371034).

Almost surely, 2^{2954640639638} is an apocalyptic number.

2954640639638 is a deficient number, since it is larger than the sum of its proper divisors (1679336265178).

2954640639638 is a wasteful number, since it uses less digits than its factorization.

2954640639638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569060 (or 569037 counting only the distinct ones).

The product of its (nonzero) digits is 201553920, while the sum is 65.

The spelling of 2954640639638 in words is "two trillion, nine hundred fifty-four billion, six hundred forty million, six hundred thirty-nine thousand, six hundred thirty-eight".