3894663524531 has 24 divisors (see below), whose sum is σ = 4310942653440. Its totient is φ = 3515385166176.

The previous prime is 3894663524519. The next prime is 3894663524597. The reversal of 3894663524531 is 1354253664983.

It is a happy number.

It is not a de Polignac number, because 3894663524531 - 2¹⁴ = 3894663508147 is a prime.

It is a super-2 number, since 2×3894663524531² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3894663524431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8538860 + ... + 8983398.

It is an arithmetic number, because the mean of its divisors is an integer number (179622610560).

Almost surely, 2^{3894663524531} is an apocalyptic number.

3894663524531 is a deficient number, since it is larger than the sum of its proper divisors (416279128909).

3894663524531 is a wasteful number, since it uses less digits than its factorization.

3894663524531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445715 (or 445702 counting only the distinct ones).

The product of its digits is 55987200, while the sum is 59.

The spelling of 3894663524531 in words is "three trillion, eight hundred ninety-four billion, six hundred sixty-three million, five hundred twenty-four thousand, five hundred thirty-one".