1974386400 has 432 divisors, whose sum is σ = 7594763904. Its totient is φ = 444165120.

The previous prime is 1974386399. The next prime is 1974386419. The reversal of 1974386400 is 46834791.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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 71 ways as a sum of consecutive naturals, for example, 12112719 + ... + 12112881.

It is an arithmetic number, because the mean of its divisors is an integer number (17580472).

Almost surely, 2^1974386400 is an apocalyptic number.

1974386400 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 1974386400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3797381952).

1974386400 is an abundant number, since it is smaller than the sum of its proper divisors (5620377504).

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

1974386400 is a wasteful number, since it uses less digits than its factorization.

1974386400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 1974386400 is about 44434.0680109305. The cubic root of 1974386400 is about 1254.5194056190.

The spelling of 1974386400 in words is "one billion, nine hundred seventy-four million, three hundred eighty-six thousand, four hundred".