6179691421 has 8 divisors (see below), whose sum is σ = 6352033464. Its totient is φ = 6008378880.

The previous prime is 6179691389. The next prime is 6179691449. The reversal of 6179691421 is 1241969716.

It can be written as a sum of positive squares in 4 ways, for example, as 218152900 + 5961538521 = 14770^2 + 77211^2 .

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 6179691421 - 2⁵ = 6179691389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6179691491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245196 + ... + 269221.

It is an arithmetic number, because the mean of its divisors is an integer number (794004183).

Almost surely, 2^6179691421 is an apocalyptic number.

It is an amenable number.

6179691421 is a deficient number, since it is larger than the sum of its proper divisors (172342043).

6179691421 is a wasteful number, since it uses less digits than its factorization.

6179691421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514751.

The product of its digits is 163296, while the sum is 46.

The square root of 6179691421 is about 78611.0133569082. The cubic root of 6179691421 is about 1835.0825119122.

The spelling of 6179691421 in words is "six billion, one hundred seventy-nine million, six hundred ninety-one thousand, four hundred twenty-one".