3981545070 has 16 divisors (see below), whose sum is σ = 9555708240. Its totient is φ = 1061745344.

The previous prime is 3981545059. The next prime is 3981545077. The reversal of 3981545070 is 705451893.

It is a super-2 number, since 2×3981545070² = 31705402288882609800, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3981545077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66359055 + ... + 66359114.

It is an arithmetic number, because the mean of its divisors is an integer number (597231765).

Almost surely, 2^3981545070 is an apocalyptic number.

3981545070 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3981545070 is an abundant number, since it is smaller than the sum of its proper divisors (5574163170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3981545070 is a wasteful number, since it uses less digits than its factorization.

3981545070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132718179.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 3981545070 is about 63099.4854971100. The cubic root of 3981545070 is about 1584.9560065675.

The spelling of 3981545070 in words is "three billion, nine hundred eighty-one million, five hundred forty-five thousand, seventy".