1974843090 has 192 divisors, whose sum is σ = 5988003840. Its totient is φ = 446497920.

The previous prime is 1974843083. The next prime is 1974843119. The reversal of 1974843090 is 903484791.

1974843090 is a `hidden beast` number, since 1 + 97 + 48 + 430 + 90 = 666.

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

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 1259487 + ... + 1261053.

It is an arithmetic number, because the mean of its divisors is an integer number (31187520).

Almost surely, 2^1974843090 is an apocalyptic number.

1974843090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1974843090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2994001920).

1974843090 is an abundant number, since it is smaller than the sum of its proper divisors (4013160750).

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

1974843090 is a wasteful number, since it uses less digits than its factorization.

1974843090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677 (or 1674 counting only the distinct ones).

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

The square root of 1974843090 is about 44439.2066760873. The cubic root of 1974843090 is about 1254.6161246637.

The spelling of 1974843090 in words is "one billion, nine hundred seventy-four million, eight hundred forty-three thousand, ninety".