6144981 has 4 divisors (see below), whose sum is σ = 8193312. Its totient is φ = 4096652.

The previous prime is 6144977. The next prime is 6144989. The reversal of 6144981 is 1894416.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6144981 - 2² = 6144977 is a prime.

It is a super-2 number, since 2×6144981² = 75521582980722, which contains 22 as substring.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6144989) 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, 1024161 + ... + 1024166.

It is an arithmetic number, because the mean of its divisors is an integer number (2048328).

Almost surely, 2^6144981 is an apocalyptic number.

It is an amenable number.

6144981 is a deficient number, since it is larger than the sum of its proper divisors (2048331).

6144981 is a wasteful number, since it uses less digits than its factorization.

6144981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048330.

The product of its digits is 6912, while the sum is 33.

The square root of 6144981 is about 2478.9072189172. The cubic root of 6144981 is about 183.1640262470.

The spelling of 6144981 in words is "six million, one hundred forty-four thousand, nine hundred eighty-one".