3971849951 has 8 divisors (see below), whose sum is σ = 4011638400. Its totient is φ = 3932111128.

The previous prime is 3971849911. The next prime is 3971849963. The reversal of 3971849951 is 1599481793.

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 3971849951 - 2⁶ = 3971849887 is a prime.

It is a super-3 number, since 3×3971849951³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3971849911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160400 + ... + 183498.

It is an arithmetic number, because the mean of its divisors is an integer number (501454800).

Almost surely, 2^3971849951 is an apocalyptic number.

3971849951 is a deficient number, since it is larger than the sum of its proper divisors (39788449).

3971849951 is a wasteful number, since it uses less digits than its factorization.

3971849951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24813.

The product of its digits is 2449440, while the sum is 56.

The square root of 3971849951 is about 63022.6145998403. The cubic root of 3971849951 is about 1583.6684974775.

The spelling of 3971849951 in words is "three billion, nine hundred seventy-one million, eight hundred forty-nine thousand, nine hundred fifty-one".