1453400203 has 4 divisors (see below), whose sum is σ = 1460930968. Its totient is φ = 1445869440.

The previous prime is 1453400183. The next prime is 1453400233. The reversal of 1453400203 is 3020043541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3020043541 = 241 ⋅12531301.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1453400203 is a prime.

It is a super-2 number, since 2×1453400203² = 4224744300160882418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1453400233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3765093 + ... + 3765478.

It is an arithmetic number, because the mean of its divisors is an integer number (365232742).

Almost surely, 2^1453400203 is an apocalyptic number.

1453400203 is a deficient number, since it is larger than the sum of its proper divisors (7530765).

1453400203 is an equidigital number, since it uses as much as digits as its factorization.

1453400203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7530764.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 1453400203 is about 38123.4862388004. The cubic root of 1453400203 is about 1132.7352234397.

Adding to 1453400203 its reverse (3020043541), we get a palindrome (4473443744).

The spelling of 1453400203 in words is "one billion, four hundred fifty-three million, four hundred thousand, two hundred three".