3708505381 has 4 divisors (see below), whose sum is σ = 4238291872. Its totient is φ = 3178718892.

The previous prime is 3708505351. The next prime is 3708505399. The reversal of 3708505381 is 1835058073.

3708505381 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.

It is a cyclic number.

It is not a de Polignac number, because 3708505381 - 2²³ = 3700116773 is a prime.

It is a super-2 number, since 2×3708505381² = 27506024321811910322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3708505351) 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, 264893235 + ... + 264893248.

It is an arithmetic number, because the mean of its divisors is an integer number (1059572968).

Almost surely, 2^3708505381 is an apocalyptic number.

It is an amenable number.

3708505381 is a deficient number, since it is larger than the sum of its proper divisors (529786491).

3708505381 is an equidigital number, since it uses as much as digits as its factorization.

3708505381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529786490.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 3708505381 is about 60897.4989716327. The cubic root of 3708505381 is about 1547.8646114847.

The spelling of 3708505381 in words is "three billion, seven hundred eight million, five hundred five thousand, three hundred eighty-one".