4161977931 has 4 divisors (see below), whose sum is σ = 5549303912. Its totient is φ = 2774651952.

The previous prime is 4161977929. The next prime is 4161977957. The reversal of 4161977931 is 1397791614.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4161977931 - 2¹ = 4161977929 is a prime.

It is a super-2 number, since 2×4161977931² = 34644120596262081522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4161977921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 693662986 + ... + 693662991.

It is an arithmetic number, because the mean of its divisors is an integer number (1387325978).

Almost surely, 2^4161977931 is an apocalyptic number.

4161977931 is a deficient number, since it is larger than the sum of its proper divisors (1387325981).

4161977931 is a wasteful number, since it uses less digits than its factorization.

4161977931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387325980.

The product of its digits is 285768, while the sum is 48.

The square root of 4161977931 is about 64513.3934233815. The cubic root of 4161977931 is about 1608.5451578601.

The spelling of 4161977931 in words is "four billion, one hundred sixty-one million, nine hundred seventy-seven thousand, nine hundred thirty-one".