3945804502 has 4 divisors (see below), whose sum is σ = 5918706756. Its totient is φ = 1972902250.

The previous prime is 3945804463. The next prime is 3945804503. The reversal of 3945804502 is 2054085493.

3945804502 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2054085493 = 263 ⋅7810211.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3945804503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986451124 + ... + 986451127.

It is an arithmetic number, because the mean of its divisors is an integer number (1479676689).

Almost surely, 2^3945804502 is an apocalyptic number.

3945804502 is a deficient number, since it is larger than the sum of its proper divisors (1972902254).

3945804502 is a wasteful number, since it uses less digits than its factorization.

3945804502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972902253.

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 3945804502 is about 62815.6389922128. The cubic root of 3945804502 is about 1580.1992621092.

Adding to 3945804502 its reverse (2054085493), we get a palindrome (5999889995).

The spelling of 3945804502 in words is "three billion, nine hundred forty-five million, eight hundred four thousand, five hundred two".