3780309381 has 4 divisors (see below), whose sum is σ = 5040412512. Its totient is φ = 2520206252.

The previous prime is 3780309373. The next prime is 3780309389. The reversal of 3780309381 is 1839030873.

3780309381 is digitally balanced in base 3, 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 an interprime number because it is at equal distance from previous prime (3780309373) and next prime (3780309389).

It is a cyclic number.

It is not a de Polignac number, because 3780309381 - 2³ = 3780309373 is a prime.

It is a super-2 number, since 2×3780309381² = 28581478032153206322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3780309389) 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, 630051561 + ... + 630051566.

It is an arithmetic number, because the mean of its divisors is an integer number (1260103128).

Almost surely, 2^3780309381 is an apocalyptic number.

It is an amenable number.

3780309381 is a deficient number, since it is larger than the sum of its proper divisors (1260103131).

3780309381 is a wasteful number, since it uses less digits than its factorization.

3780309381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260103130.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 3780309381 is about 61484.2205854478. The cubic root of 3780309381 is about 1557.7907283117.

The spelling of 3780309381 in words is "three billion, seven hundred eighty million, three hundred nine thousand, three hundred eighty-one".