4068131961 has 4 divisors (see below), whose sum is σ = 5424175952. Its totient is φ = 2712087972.

The previous prime is 4068131957. The next prime is 4068131983. The reversal of 4068131961 is 1691318604.

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 not a de Polignac number, because 4068131961 - 2² = 4068131957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4068131941) 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, 678021991 + ... + 678021996.

It is an arithmetic number, because the mean of its divisors is an integer number (1356043988).

Almost surely, 2^4068131961 is an apocalyptic number.

It is an amenable number.

4068131961 is a deficient number, since it is larger than the sum of its proper divisors (1356043991).

4068131961 is a wasteful number, since it uses less digits than its factorization.

4068131961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356043990.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 4068131961 is about 63781.9093552396. The cubic root of 4068131961 is about 1596.3630883986.

The spelling of 4068131961 in words is "four billion, sixty-eight million, one hundred thirty-one thousand, nine hundred sixty-one".