1491504400 has 45 divisors (see below), whose sum is σ = 3585195973. Its totient is φ = 596292800.

The previous prime is 1491504397. The next prime is 1491504431. The reversal of 1491504400 is 44051941.

The square root of 1491504400 is 38620.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 536941584 + 954562816 = 23172^2 + 30896^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 771435 + ... + 773365.

Almost surely, 2^1491504400 is an apocalyptic number.

1491504400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1491504400 is the 38620-th square number.

It is an amenable number.

1491504400 is an abundant number, since it is smaller than the sum of its proper divisors (2093691573).

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

1491504400 is an frugal number, since it uses more digits than its factorization.

1491504400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3880 (or 1938 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The cubic root of 1491504400 is about 1142.5490309292.

The spelling of 1491504400 in words is "one billion, four hundred ninety-one million, five hundred four thousand, four hundred".