1491763200 has 192 divisors, whose sum is σ = 4940814720. Its totient is φ = 397148160.

The previous prime is 1491763177. The next prime is 1491763211. The reversal of 1491763200 is 23671941.

It is a tau number, because it is divible by the number of its divisors (192).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2457297 + ... + 2457903.

It is an arithmetic number, because the mean of its divisors is an integer number (25733410).

Almost surely, 2^1491763200 is an apocalyptic number.

1491763200 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 1491763200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2470407360).

1491763200 is an abundant number, since it is smaller than the sum of its proper divisors (3449051520).

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

1491763200 is an frugal number, since it uses more digits than its factorization.

1491763200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650 (or 617 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 1491763200 is about 38623.3504502134. The cubic root of 1491763200 is about 1142.6151106512.

The spelling of 1491763200 in words is "one billion, four hundred ninety-one million, seven hundred sixty-three thousand, two hundred".