3748916633281 has 4 divisors (see below), whose sum is σ = 3748920518592. Its totient is φ = 3748912747972.

The previous prime is 3748916633249. The next prime is 3748916633291. The reversal of 3748916633281 is 1823366198473.

It is a happy number.

3748916633281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3748916633281 - 2⁵ = 3748916633249 is a prime.

It is a super-2 number, since 2×3748916633281² (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 (3748916633291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 734196 + ... + 2834938.

It is an arithmetic number, because the mean of its divisors is an integer number (937230129648).

Almost surely, 2^{3748916633281} is an apocalyptic number.

It is an amenable number.

3748916633281 is a deficient number, since it is larger than the sum of its proper divisors (3885311).

3748916633281 is a wasteful number, since it uses less digits than its factorization.

3748916633281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3885310.

The product of its digits is 31352832, while the sum is 61.

The spelling of 3748916633281 in words is "three trillion, seven hundred forty-eight billion, nine hundred sixteen million, six hundred thirty-three thousand, two hundred eighty-one".