6219214981 has 16 divisors (see below), whose sum is σ = 7509219840. Its totient is φ = 5037419520.

The previous prime is 6219214949. The next prime is 6219214993. The reversal of 6219214981 is 1894129126.

It is not a de Polignac number, because 6219214981 - 2⁵ = 6219214949 is a prime.

It is a super-2 number, since 2×6219214981² = 77357269959789660722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6219214921) 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, 316380 + ... + 335461.

It is an arithmetic number, because the mean of its divisors is an integer number (469326240).

Almost surely, 2^6219214981 is an apocalyptic number.

It is an amenable number.

6219214981 is a deficient number, since it is larger than the sum of its proper divisors (1290004859).

6219214981 is a wasteful number, since it uses less digits than its factorization.

6219214981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651924.

The product of its digits is 62208, while the sum is 43.

The square root of 6219214981 is about 78861.9996005681. Note that the first 3 decimals coincide. The cubic root of 6219214981 is about 1838.9864239864.

The spelling of 6219214981 in words is "six billion, two hundred nineteen million, two hundred fourteen thousand, nine hundred eighty-one".