3835656457381 has 4 divisors (see below), whose sum is σ = 4383607379872. Its totient is φ = 3287705534892.

The previous prime is 3835656457337. The next prime is 3835656457387. The reversal of 3835656457381 is 1837546565383.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3835656457381 - 2⁷ = 3835656457253 is a prime.

It is a super-2 number, since 2×3835656457381² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3835656457387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273975461235 + ... + 273975461248.

It is an arithmetic number, because the mean of its divisors is an integer number (1095901844968).

Almost surely, 2^{3835656457381} is an apocalyptic number.

It is an amenable number.

3835656457381 is a deficient number, since it is larger than the sum of its proper divisors (547950922491).

3835656457381 is an equidigital number, since it uses as much as digits as its factorization.

3835656457381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547950922490.

The product of its digits is 217728000, while the sum is 64.

The spelling of 3835656457381 in words is "three trillion, eight hundred thirty-five billion, six hundred fifty-six million, four hundred fifty-seven thousand, three hundred eighty-one".