1453028638 has 4 divisors (see below), whose sum is σ = 2179542960. Its totient is φ = 726514318.

The previous prime is 1453028623. The next prime is 1453028653. The reversal of 1453028638 is 8368203541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8368203541 = 25793 ⋅324437.

It is an interprime number because it is at equal distance from previous prime (1453028623) and next prime (1453028653).

It is a super-2 number, since 2×1453028638² = 4222584445696270088, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1453028638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363257158 + ... + 363257161.

It is an arithmetic number, because the mean of its divisors is an integer number (544885740).

Almost surely, 2^1453028638 is an apocalyptic number.

1453028638 is a deficient number, since it is larger than the sum of its proper divisors (726514322).

1453028638 is an equidigital number, since it uses as much as digits as its factorization.

1453028638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726514321.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 1453028638 is about 38118.6127502038. The cubic root of 1453028638 is about 1132.6386864514.

The spelling of 1453028638 in words is "one billion, four hundred fifty-three million, twenty-eight thousand, six hundred thirty-eight".