1338623087 has 4 divisors (see below), whose sum is σ = 1354751160. Its totient is φ = 1322495016.

The previous prime is 1338623081. The next prime is 1338623089. The reversal of 1338623087 is 7803268331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7803268331 = 137 ⋅56958163.

It is a cyclic number.

It is not a de Polignac number, because 1338623087 - 2¹⁰ = 1338622063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338623081) 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, 8063912 + ... + 8064077.

It is an arithmetic number, because the mean of its divisors is an integer number (338687790).

Almost surely, 2^1338623087 is an apocalyptic number.

1338623087 is a deficient number, since it is larger than the sum of its proper divisors (16128073).

1338623087 is an equidigital number, since it uses as much as digits as its factorization.

1338623087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16128072.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 1338623087 is about 36587.1984032667. The cubic root of 1338623087 is about 1102.0960274927.

The spelling of 1338623087 in words is "one billion, three hundred thirty-eight million, six hundred twenty-three thousand, eighty-seven".