1338192744 has 48 divisors (see below), whose sum is σ = 3891686400. Its totient is φ = 382340448.

The previous prime is 1338192721. The next prime is 1338192749. The reversal of 1338192744 is 4472918331.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 1338192696 and 1338192705.

It is not an unprimeable number, because it can be changed into a prime (1338192749) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 567784 + ... + 570135.

It is an arithmetic number, because the mean of its divisors is an integer number (81076800).

Almost surely, 2^1338192744 is an apocalyptic number.

1338192744 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1338192744 is an abundant number, since it is smaller than the sum of its proper divisors (2553493656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1338192744 is a wasteful number, since it uses less digits than its factorization.

1338192744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137942 (or 1137931 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The square root of 1338192744 is about 36581.3168707743. The cubic root of 1338192744 is about 1101.9779135519.

The spelling of 1338192744 in words is "one billion, three hundred thirty-eight million, one hundred ninety-two thousand, seven hundred forty-four".