1603945454 has 4 divisors (see below), whose sum is σ = 2405918184. Its totient is φ = 801972726.

The previous prime is 1603945433. The next prime is 1603945463. The reversal of 1603945454 is 4545493061.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1603945454² = 5145282038814532232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400986362 + ... + 400986365.

It is an arithmetic number, because the mean of its divisors is an integer number (601479546).

Almost surely, 2^1603945454 is an apocalyptic number.

1603945454 is a deficient number, since it is larger than the sum of its proper divisors (801972730).

1603945454 is an equidigital number, since it uses as much as digits as its factorization.

1603945454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801972729.

The product of its (nonzero) digits is 259200, while the sum is 41.

The square root of 1603945454 is about 40049.2878088987. The cubic root of 1603945454 is about 1170.5676875964.

The spelling of 1603945454 in words is "one billion, six hundred three million, nine hundred forty-five thousand, four hundred fifty-four".