5951891891 has 16 divisors (see below), whose sum is σ = 6794303328. Its totient is φ = 5165222400.

The previous prime is 5951891851. The next prime is 5951891893. The reversal of 5951891891 is 1981981595.

5951891891 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5951891891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5951891893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116390 + ... + 159531.

It is an arithmetic number, because the mean of its divisors is an integer number (424643958).

Almost surely, 2^5951891891 is an apocalyptic number.

5951891891 is a deficient number, since it is larger than the sum of its proper divisors (842411437).

5951891891 is a wasteful number, since it uses less digits than its factorization.

5951891891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276022.

The product of its digits is 1166400, while the sum is 56.

The square root of 5951891891 is about 77148.5054359448. The cubic root of 5951891891 is about 1812.2509860424.

The spelling of 5951891891 in words is "five billion, nine hundred fifty-one million, eight hundred ninety-one thousand, eight hundred ninety-one".