981224190 has 96 divisors (see below), whose sum is σ = 2711348640. Its totient is φ = 245348352.

The previous prime is 981224147. The next prime is 981224197. The reversal of 981224190 is 91422189.

It is a super-2 number, since 2×981224190² = 1925601822082312200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981224197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 468666 + ... + 470754.

It is an arithmetic number, because the mean of its divisors is an integer number (28243215).

Almost surely, 2^981224190 is an apocalyptic number.

981224190 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 981224190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1355674320).

981224190 is an abundant number, since it is smaller than the sum of its proper divisors (1730124450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

981224190 is a wasteful number, since it uses less digits than its factorization.

981224190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426 (or 2423 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 981224190 is about 31324.4982401953. The cubic root of 981224190 is about 993.7018127815.

The spelling of 981224190 in words is "nine hundred eighty-one million, two hundred twenty-four thousand, one hundred ninety".