3945645854 has 8 divisors (see below), whose sum is σ = 5963648328. Its totient is φ = 1957763080.

The previous prime is 3945645853. The next prime is 3945645871. The reversal of 3945645854 is 4585465493.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 3945645796 and 3945645805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3945645853) 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, 7529597 + ... + 7530120.

It is an arithmetic number, because the mean of its divisors is an integer number (745456041).

Almost surely, 2^3945645854 is an apocalyptic number.

3945645854 is a deficient number, since it is larger than the sum of its proper divisors (2018002474).

3945645854 is a wasteful number, since it uses less digits than its factorization.

3945645854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15059850.

The product of its digits is 10368000, while the sum is 53.

The square root of 3945645854 is about 62814.3761729749. The cubic root of 3945645854 is about 1580.1780835965.

The spelling of 3945645854 in words is "three billion, nine hundred forty-five million, six hundred forty-five thousand, eight hundred fifty-four".