1438798363 has 4 divisors (see below), whose sum is σ = 1473891048. Its totient is φ = 1403705680.

The previous prime is 1438798343. The next prime is 1438798369. The reversal of 1438798363 is 3638978341.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1438798363 - 2⁵ = 1438798331 is a prime.

It is a super-3 number, since 3×1438798363³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1438798363.

It is not an unprimeable number, because it can be changed into a prime (1438798369) 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, 17546281 + ... + 17546362.

It is an arithmetic number, because the mean of its divisors is an integer number (368472762).

Almost surely, 2^1438798363 is an apocalyptic number.

1438798363 is a deficient number, since it is larger than the sum of its proper divisors (35092685).

1438798363 is an equidigital number, since it uses as much as digits as its factorization.

1438798363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35092684.

The product of its digits is 2612736, while the sum is 52.

The square root of 1438798363 is about 37931.4956599394. The cubic root of 1438798363 is about 1128.9290406596.

The spelling of 1438798363 in words is "one billion, four hundred thirty-eight million, seven hundred ninety-eight thousand, three hundred sixty-three".