1338490923 has 32 divisors (see below), whose sum is σ = 2227087872. Its totient is φ = 694675200.

The previous prime is 1338490919. The next prime is 1338490931. The reversal of 1338490923 is 3290948331.

It is not a de Polignac number, because 1338490923 - 2² = 1338490919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1338490913) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 342943 + ... + 346823.

It is an arithmetic number, because the mean of its divisors is an integer number (69596496).

Almost surely, 2^1338490923 is an apocalyptic number.

1338490923 is a deficient number, since it is larger than the sum of its proper divisors (888596949).

1338490923 is a wasteful number, since it uses less digits than its factorization.

1338490923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5395.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 1338490923 is about 36585.3922078198. The cubic root of 1338490923 is about 1102.0597558404.

The spelling of 1338490923 in words is "one billion, three hundred thirty-eight million, four hundred ninety thousand, nine hundred twenty-three".