1338412478 has 32 divisors (see below), whose sum is σ = 2284292640. Its totient is φ = 583044480.

The previous prime is 1338412451. The next prime is 1338412483. The reversal of 1338412478 is 8742148331.

It is a super-2 number, since 2×1338412478² = 3582695922532200968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131948 + ... + 141728.

It is an arithmetic number, because the mean of its divisors is an integer number (71384145).

Almost surely, 2^1338412478 is an apocalyptic number.

1338412478 is a deficient number, since it is larger than the sum of its proper divisors (945880162).

1338412478 is a wasteful number, since it uses less digits than its factorization.

1338412478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10092.

The product of its digits is 129024, while the sum is 41.

The square root of 1338412478 is about 36584.3201112170. The cubic root of 1338412478 is about 1102.0382259306.

The spelling of 1338412478 in words is "one billion, three hundred thirty-eight million, four hundred twelve thousand, four hundred seventy-eight".