981483621 has 4 divisors (see below), whose sum is σ = 1308644832. Its totient is φ = 654322412.

The previous prime is 981483583. The next prime is 981483631. The reversal of 981483621 is 126384189.

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 981483621 - 2⁷ = 981483493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981483631) 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, 163580601 + ... + 163580606.

It is an arithmetic number, because the mean of its divisors is an integer number (327161208).

Almost surely, 2^981483621 is an apocalyptic number.

It is an amenable number.

981483621 is a deficient number, since it is larger than the sum of its proper divisors (327161211).

981483621 is a wasteful number, since it uses less digits than its factorization.

981483621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327161210.

The product of its digits is 82944, while the sum is 42.

The square root of 981483621 is about 31328.6389905467. The cubic root of 981483621 is about 993.7893817390.

The spelling of 981483621 in words is "nine hundred eighty-one million, four hundred eighty-three thousand, six hundred twenty-one".