1797974400 has 384 divisors, whose sum is σ = 6556723200. Its totient is φ = 430735360.

The previous prime is 1797974359. The next prime is 1797974407. The reversal of 1797974400 is 44797971.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1797974400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1797974407) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3753361 + ... + 3753839.

It is an arithmetic number, because the mean of its divisors is an integer number (17074800).

Almost surely, 2^1797974400 is an apocalyptic number.

1797974400 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 1797974400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3278361600).

1797974400 is an abundant number, since it is smaller than the sum of its proper divisors (4758748800).

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

1797974400 is a wasteful number, since it uses less digits than its factorization.

1797974400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 48.

The square root of 1797974400 is about 42402.5282265103. The cubic root of 1797974400 is about 1215.9839275346.

The spelling of 1797974400 in words is "one billion, seven hundred ninety-seven million, nine hundred seventy-four thousand, four hundred".