1453894491 has 16 divisors (see below), whose sum is σ = 2238301184. Its totient is φ = 822230784.

The previous prime is 1453894487. The next prime is 1453894523. The reversal of 1453894491 is 1944983541.

It is a happy number.

It is not a de Polignac number, because 1453894491 - 2² = 1453894487 is a prime.

It is a super-2 number, since 2×1453894491² = 4227618381920298162, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1453894491.

It is not an unprimeable number, because it can be changed into a prime (1453894411) 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 15 ways as a sum of consecutive naturals, for example, 354835 + ... + 358908.

It is an arithmetic number, because the mean of its divisors is an integer number (139893824).

Almost surely, 2^1453894491 is an apocalyptic number.

1453894491 is a deficient number, since it is larger than the sum of its proper divisors (784406693).

1453894491 is an equidigital number, since it uses as much as digits as its factorization.

1453894491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713850.

The product of its digits is 622080, while the sum is 48.

The square root of 1453894491 is about 38129.9684106872. The cubic root of 1453894491 is about 1132.8636198183.

The spelling of 1453894491 in words is "one billion, four hundred fifty-three million, eight hundred ninety-four thousand, four hundred ninety-one".