3839661545 has 8 divisors (see below), whose sum is σ = 4608117000. Its totient is φ = 3071380480.

The previous prime is 3839661533. The next prime is 3839661547. The reversal of 3839661545 is 5451669383.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 692900329 + 3146761216 = 26323^2 + 56096^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3839661545 - 2¹⁸ = 3839399401 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3839661493 and 3839661502.

It is not an unprimeable number, because it can be changed into a prime (3839661547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11081 + ... + 88329.

It is an arithmetic number, because the mean of its divisors is an integer number (576014625).

Almost surely, 2^3839661545 is an apocalyptic number.

It is an amenable number.

3839661545 is a deficient number, since it is larger than the sum of its proper divisors (768455455).

3839661545 is an equidigital number, since it uses as much as digits as its factorization.

3839661545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87195.

The product of its digits is 2332800, while the sum is 50.

The square root of 3839661545 is about 61965.0025821027. The cubic root of 3839661545 is about 1565.9010479447.

The spelling of 3839661545 in words is "three billion, eight hundred thirty-nine million, six hundred sixty-one thousand, five hundred forty-five".