3951672905 has 8 divisors (see below), whose sum is σ = 4755597000. Its totient is φ = 3152278656.

The previous prime is 3951672871. The next prime is 3951672929. The reversal of 3951672905 is 5092761593.

It can be written as a sum of positive squares in 4 ways, for example, as 1050019216 + 2901653689 = 32404^2 + 53867^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3951672905 - 2¹⁶ = 3951607369 is a prime.

It is a super-2 number, since 2×3951672905² = 31231437496222278050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3951672905.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1130540 + ... + 1134029.

It is an arithmetic number, because the mean of its divisors is an integer number (594449625).

Almost surely, 2^3951672905 is an apocalyptic number.

It is an amenable number.

3951672905 is a deficient number, since it is larger than the sum of its proper divisors (803924095).

3951672905 is a wasteful number, since it uses less digits than its factorization.

3951672905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2264923.

The product of its (nonzero) digits is 510300, while the sum is 47.

The square root of 3951672905 is about 62862.3329586168. The cubic root of 3951672905 is about 1580.9822585522.

The spelling of 3951672905 in words is "three billion, nine hundred fifty-one million, six hundred seventy-two thousand, nine hundred five".