1974893440 has 288 divisors, whose sum is σ = 5560601400. Its totient is φ = 668528640.

The previous prime is 1974893419. The next prime is 1974893443. The reversal of 1974893440 is 443984791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1974893443) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 63706225 + ... + 63706255.

Almost surely, 2^1974893440 is an apocalyptic number.

1974893440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1974893440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2780300700).

1974893440 is an abundant number, since it is smaller than the sum of its proper divisors (3585707960).

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

1974893440 is a wasteful number, since it uses less digits than its factorization.

1974893440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 1974893440 is about 44439.7731767389. The cubic root of 1974893440 is about 1254.6267870103.

The spelling of 1974893440 in words is "one billion, nine hundred seventy-four million, eight hundred ninety-three thousand, four hundred forty".