3894935126481 has 27 divisors (see below), whose sum is σ = 6544620497961. Its totient is φ = 2225653532424.

The previous prime is 3894935126437. The next prime is 3894935126501. The reversal of 3894935126481 is 1846215394983.

The square root of 3894935126481 is 1973559.

It is a perfect power (a square), and thus also a powerful number.

3894935126481 is a `hidden beast` number, since 3 + 8 + 9 + 493 + 5 + 1 + 2 + 64 + 81 = 666.

It is not a de Polignac number, because 3894935126481 - 2⁷ = 3894935126353 is a prime.

It is a super-2 number, since 2×3894935126481² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (3894935026481) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 41397750 + ... + 41491728.

Almost surely, 2^{3894935126481} is an apocalyptic number.

3894935126481 is the 1973559-th square number.

3894935126481 is the 986780-th centered octagonal number.

It is an amenable number.

3894935126481 is a deficient number, since it is larger than the sum of its proper divisors (2649685371480).

3894935126481 is an frugal number, since it uses more digits than its factorization.

3894935126481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187978 (or 93989 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 63.

The spelling of 3894935126481 in words is "three trillion, eight hundred ninety-four billion, nine hundred thirty-five million, one hundred twenty-six thousand, four hundred eighty-one".