481863981 has 8 divisors (see below), whose sum is σ = 647390304. Its totient is φ = 318790160.

The previous prime is 481863953. The next prime is 481863983. The reversal of 481863981 is 189368184.

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 481863981 - 2⁶ = 481863917 is a prime.

It is a super-2 number, since 2×481863981² = 464385792370336722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 481863981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481863983) 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, 612666 + ... + 613451.

It is an arithmetic number, because the mean of its divisors is an integer number (80923788).

Almost surely, 2^481863981 is an apocalyptic number.

It is an amenable number.

481863981 is a deficient number, since it is larger than the sum of its proper divisors (165526323).

481863981 is a wasteful number, since it uses less digits than its factorization.

481863981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226251.

The product of its digits is 331776, while the sum is 48.

The square root of 481863981 is about 21951.4004336853. The cubic root of 481863981 is about 783.9857245466.

The spelling of 481863981 in words is "four hundred eighty-one million, eight hundred sixty-three thousand, nine hundred eighty-one".