6861193145 has 8 divisors (see below), whose sum is σ = 8233880256. Its totient is φ = 5488655536.

The previous prime is 6861193139. The next prime is 6861193147. The reversal of 6861193145 is 5413911686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6861193145 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6861193096 and 6861193105.

It is not an unprimeable number, because it can be changed into a prime (6861193147) 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, 140954 + ... + 183276.

It is an arithmetic number, because the mean of its divisors is an integer number (1029235032).

Almost surely, 2^6861193145 is an apocalyptic number.

It is an amenable number.

6861193145 is a deficient number, since it is larger than the sum of its proper divisors (1372687111).

6861193145 is a wasteful number, since it uses less digits than its factorization.

6861193145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74751.

The product of its digits is 155520, while the sum is 44.

The square root of 6861193145 is about 82832.3194471820. The cubic root of 6861193145 is about 1900.2024848837.

The spelling of 6861193145 in words is "six billion, eight hundred sixty-one million, one hundred ninety-three thousand, one hundred forty-five".