6146221387 has 4 divisors (see below), whose sum is σ = 6165610416. Its totient is φ = 6126832360.

The previous prime is 6146221381. The next prime is 6146221421. The reversal of 6146221387 is 7831226416.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6146221387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6146221381) 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, 9694039 + ... + 9694672.

It is an arithmetic number, because the mean of its divisors is an integer number (1541402604).

Almost surely, 2^6146221387 is an apocalyptic number.

6146221387 is a deficient number, since it is larger than the sum of its proper divisors (19389029).

6146221387 is a wasteful number, since it uses less digits than its factorization.

6146221387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19389028.

The product of its digits is 96768, while the sum is 40.

The square root of 6146221387 is about 78397.8404485736. The cubic root of 6146221387 is about 1831.7634952849.

The spelling of 6146221387 in words is "six billion, one hundred forty-six million, two hundred twenty-one thousand, three hundred eighty-seven".