3973868653 has 4 divisors (see below), whose sum is σ = 3977098048. Its totient is φ = 3970639260.

The previous prime is 3973868629. The next prime is 3973868681. The reversal of 3973868653 is 3568683793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3568683793 = 61 ⋅58503013.

It is a cyclic number.

It is not a de Polignac number, because 3973868653 - 2⁵ = 3973868621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3973862653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1612851 + ... + 1615312.

It is an arithmetic number, because the mean of its divisors is an integer number (994274512).

Almost surely, 2^3973868653 is an apocalyptic number.

It is an amenable number.

3973868653 is a deficient number, since it is larger than the sum of its proper divisors (3229395).

3973868653 is a wasteful number, since it uses less digits than its factorization.

3973868653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3229394.

The product of its digits is 19595520, while the sum is 58.

The square root of 3973868653 is about 63038.6282607736. The cubic root of 3973868653 is about 1583.9367531044.

The spelling of 3973868653 in words is "three billion, nine hundred seventy-three million, eight hundred sixty-eight thousand, six hundred fifty-three".