3918068945 has 32 divisors (see below), whose sum is σ = 5661070080. Its totient is φ = 2543063040.

The previous prime is 3918068939. The next prime is 3918068953. The reversal of 3918068945 is 5498608193.

It is not a de Polignac number, because 3918068945 - 2¹² = 3918064849 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1164065 + ... + 1167425.

It is an arithmetic number, because the mean of its divisors is an integer number (176908440).

Almost surely, 2^3918068945 is an apocalyptic number.

3918068945 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3918068945 is a deficient number, since it is larger than the sum of its proper divisors (1743001135).

3918068945 is a wasteful number, since it uses less digits than its factorization.

3918068945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5145.

The product of its (nonzero) digits is 1866240, while the sum is 53.

The square root of 3918068945 is about 62594.4801480131. The cubic root of 3918068945 is about 1576.4880797853.

The spelling of 3918068945 in words is "three billion, nine hundred eighteen million, sixty-eight thousand, nine hundred forty-five".