1628381902947 has 8 divisors (see below), whose sum is σ = 2181465804480. Its totient is φ = 1080442968360.

The previous prime is 1628381902921. The next prime is 1628381902957. The reversal of 1628381902947 is 7492091838261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1628381902947 - 2⁸ = 1628381902691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1628381902957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1286240997 + ... + 1286242262.

It is an arithmetic number, because the mean of its divisors is an integer number (272683225560).

Almost surely, 2^{1628381902947} is an apocalyptic number.

1628381902947 is a deficient number, since it is larger than the sum of its proper divisors (553083901533).

1628381902947 is a wasteful number, since it uses less digits than its factorization.

1628381902947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2572483473.

The product of its (nonzero) digits is 10450944, while the sum is 60.

The spelling of 1628381902947 in words is "one trillion, six hundred twenty-eight billion, three hundred eighty-one million, nine hundred two thousand, nine hundred forty-seven".