3858472972973 has 4 divisors (see below), whose sum is σ = 3858513169308. Its totient is φ = 3858432776640.

The previous prime is 3858472972957. The next prime is 3858472973009. The reversal of 3858472972973 is 3792792748583.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3743129870089 + 115343102884 = 1934717^2 + 339622^2 .

It is a cyclic number.

It is not a de Polignac number, because 3858472972973 - 2⁴ = 3858472972957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3858472972973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3858472972933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19953836 + ... + 20146277.

It is an arithmetic number, because the mean of its divisors is an integer number (964628292327).

Almost surely, 2^{3858472972973} is an apocalyptic number.

It is an amenable number.

3858472972973 is a deficient number, since it is larger than the sum of its proper divisors (40196335).

3858472972973 is an equidigital number, since it uses as much as digits as its factorization.

3858472972973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40196334.

The product of its digits is 1280240640, while the sum is 74.

The spelling of 3858472972973 in words is "three trillion, eight hundred fifty-eight billion, four hundred seventy-two million, nine hundred seventy-two thousand, nine hundred seventy-three".