3951285161 has 4 divisors (see below), whose sum is σ = 4123080192. Its totient is φ = 3779490132.

The previous prime is 3951285157. The next prime is 3951285181. The reversal of 3951285161 is 1615821593.

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 3951285161 - 2² = 3951285157 is a prime.

It is a super-2 number, since 2×3951285161² = 31225308847077591842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3951285181) 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, 85897481 + ... + 85897526.

It is an arithmetic number, because the mean of its divisors is an integer number (1030770048).

Almost surely, 2^3951285161 is an apocalyptic number.

It is an amenable number.

3951285161 is a deficient number, since it is larger than the sum of its proper divisors (171795031).

3951285161 is a wasteful number, since it uses less digits than its factorization.

3951285161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171795030.

The product of its digits is 64800, while the sum is 41.

The square root of 3951285161 is about 62859.2488103382. The cubic root of 3951285161 is about 1580.9305474204.

The spelling of 3951285161 in words is "three billion, nine hundred fifty-one million, two hundred eighty-five thousand, one hundred sixty-one".