974438190 has 96 divisors (see below), whose sum is σ = 2853107712. Its totient is φ = 228600000.

The previous prime is 974438189. The next prime is 974438273. The reversal of 974438190 is 91834479.

It is a super-2 number, since 2×974438190² = 1899059572260952200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14815 + ... + 46565.

It is an arithmetic number, because the mean of its divisors is an integer number (29719872).

Almost surely, 2^974438190 is an apocalyptic number.

974438190 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 974438190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1426553856).

974438190 is an abundant number, since it is smaller than the sum of its proper divisors (1878669522).

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

974438190 is a wasteful number, since it uses less digits than its factorization.

974438190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31806 (or 31803 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 974438190 is about 31215.9925358781. The cubic root of 974438190 is about 991.4057470773.

The spelling of 974438190 in words is "nine hundred seventy-four million, four hundred thirty-eight thousand, one hundred ninety".