3709375381 has 4 divisors (see below), whose sum is σ = 3709738732. Its totient is φ = 3709012032.

The previous prime is 3709375379. The next prime is 3709375409. The reversal of 3709375381 is 1835739073.

3709375381 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 an emirpimes, since its reverse is a distinct semiprime: 1835739073 = 7 ⋅262248439.

It can be written as a sum of positive squares in 2 ways, for example, as 1874024100 + 1835351281 = 43290^2 + 42841^2 .

It is a cyclic number.

It is not a de Polignac number, because 3709375381 - 2¹ = 3709375379 is a prime.

It is a super-2 number, since 2×3709375381² = 27518931434337790322, 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 (3709375321) 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, 165906 + ... + 186931.

It is an arithmetic number, because the mean of its divisors is an integer number (927434683).

Almost surely, 2^3709375381 is an apocalyptic number.

It is an amenable number.

3709375381 is a deficient number, since it is larger than the sum of its proper divisors (363351).

3709375381 is a wasteful number, since it uses less digits than its factorization.

3709375381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363350.

The product of its (nonzero) digits is 476280, while the sum is 46.

The square root of 3709375381 is about 60904.6417032397. The cubic root of 3709375381 is about 1547.9856428960.

The spelling of 3709375381 in words is "three billion, seven hundred nine million, three hundred seventy-five thousand, three hundred eighty-one".