1438474868 has 6 divisors (see below), whose sum is σ = 2517331026. Its totient is φ = 719237432.

The previous prime is 1438474861. The next prime is 1438474879. The reversal of 1438474868 is 8684748341.

It can be written as a sum of positive squares in only one way, i.e., 1225840144 + 212634724 = 35012^2 + 14582^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438474861) 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 as a sum of consecutive naturals, namely, 179809355 + ... + 179809362.

It is an arithmetic number, because the mean of its divisors is an integer number (419555171).

Almost surely, 2^1438474868 is an apocalyptic number.

It is an amenable number.

1438474868 is a deficient number, since it is larger than the sum of its proper divisors (1078856158).

1438474868 is a wasteful number, since it uses less digits than its factorization.

1438474868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359618721 (or 359618719 counting only the distinct ones).

The product of its digits is 4128768, while the sum is 53.

The square root of 1438474868 is about 37927.2312197977. The cubic root of 1438474868 is about 1128.8444260063.

The spelling of 1438474868 in words is "one billion, four hundred thirty-eight million, four hundred seventy-four thousand, eight hundred sixty-eight".