1491454375 has 20 divisors (see below), whose sum is σ = 1882253736. Its totient is φ = 1181300000.

The previous prime is 1491454373. The next prime is 1491454403. The reversal of 1491454375 is 5734541941.

It is a happy number.

It is not a de Polignac number, because 1491454375 - 2¹ = 1491454373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491454373) 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 19 ways as a sum of consecutive naturals, for example, 51312 + ... + 74938.

Almost surely, 2^1491454375 is an apocalyptic number.

1491454375 is a deficient number, since it is larger than the sum of its proper divisors (390799361).

1491454375 is an equidigital number, since it uses as much as digits as its factorization.

1491454375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23748 (or 23733 counting only the distinct ones).

The product of its digits is 302400, while the sum is 43.

The square root of 1491454375 is about 38619.3523379147. The cubic root of 1491454375 is about 1142.5362571029.

The spelling of 1491454375 in words is "one billion, four hundred ninety-one million, four hundred fifty-four thousand, three hundred seventy-five".