1438028451 has 8 divisors (see below), whose sum is σ = 2130412560. Its totient is φ = 958685616.

The previous prime is 1438028441. The next prime is 1438028467. The reversal of 1438028451 is 1548208341.

It is not a de Polignac number, because 1438028451 - 2¹⁸ = 1437766307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1438028411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26630130 + ... + 26630183.

It is an arithmetic number, because the mean of its divisors is an integer number (266301570).

Almost surely, 2^1438028451 is an apocalyptic number.

1438028451 is a deficient number, since it is larger than the sum of its proper divisors (692384109).

1438028451 is an equidigital number, since it uses as much as digits as its factorization.

1438028451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53260322 (or 53260316 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 1438028451 is about 37921.3455853033. The cubic root of 1438028451 is about 1128.7276385455.

The spelling of 1438028451 in words is "one billion, four hundred thirty-eight million, twenty-eight thousand, four hundred fifty-one".