3725948161 has 4 divisors (see below), whose sum is σ = 4012559572. Its totient is φ = 3439336752.

The previous prime is 3725948147. The next prime is 3725948167. The reversal of 3725948161 is 1618495273.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1618495273 = 617 ⋅2623169.

It can be written as a sum of positive squares in 2 ways, for example, as 1496219761 + 2229728400 = 38681^2 + 47220^2 .

It is a cyclic number.

It is not a de Polignac number, because 3725948161 - 2²³ = 3717559553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3725948167) 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, 143305686 + ... + 143305711.

It is an arithmetic number, because the mean of its divisors is an integer number (1003139893).

Almost surely, 2^3725948161 is an apocalyptic number.

It is an amenable number.

3725948161 is a deficient number, since it is larger than the sum of its proper divisors (286611411).

3725948161 is a wasteful number, since it uses less digits than its factorization.

3725948161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286611410.

The product of its digits is 362880, while the sum is 46.

The square root of 3725948161 is about 61040.5452220080. The cubic root of 3725948161 is about 1550.2875860416.

The spelling of 3725948161 in words is "three billion, seven hundred twenty-five million, nine hundred forty-eight thousand, one hundred sixty-one".