3945134986 has 24 divisors (see below), whose sum is σ = 6416501184. Its totient is φ = 1818395280.

The previous prime is 3945134983. The next prime is 3945134993. The reversal of 3945134986 is 6894315493.

It is a happy number.

It is a super-2 number, since 2×3945134986² = 31128180115522440392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3945134983) 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 11 ways as a sum of consecutive naturals, for example, 258591 + ... + 273421.

It is an arithmetic number, because the mean of its divisors is an integer number (267354216).

Almost surely, 2^3945134986 is an apocalyptic number.

3945134986 is a deficient number, since it is larger than the sum of its proper divisors (2471366198).

3945134986 is a wasteful number, since it uses less digits than its factorization.

3945134986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15646 (or 15633 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 52.

The square root of 3945134986 is about 62810.3095518562. The cubic root of 3945134986 is about 1580.1098820659.

The spelling of 3945134986 in words is "three billion, nine hundred forty-five million, one hundred thirty-four thousand, nine hundred eighty-six".