1438948313 has 8 divisors (see below), whose sum is σ = 1585305216. Its totient is φ = 1295182000.

The previous prime is 1438948283. The next prime is 1438948331. The reversal of 1438948313 is 3138498341.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1438948313 - 2¹⁶ = 1438882777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1438948393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 646481 + ... + 648702.

It is an arithmetic number, because the mean of its divisors is an integer number (198163152).

Almost surely, 2^1438948313 is an apocalyptic number.

It is an amenable number.

1438948313 is a deficient number, since it is larger than the sum of its proper divisors (146356903).

1438948313 is a wasteful number, since it uses less digits than its factorization.

1438948313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295295.

The product of its digits is 248832, while the sum is 44.

The square root of 1438948313 is about 37933.4721980469. The cubic root of 1438948313 is about 1128.9682578827.

The spelling of 1438948313 in words is "one billion, four hundred thirty-eight million, nine hundred forty-eight thousand, three hundred thirteen".