1138400516 has 24 divisors (see below), whose sum is σ = 2210150880. Its totient is φ = 508683200.

The previous prime is 1138400509. The next prime is 1138400519. The reversal of 1138400516 is 6150048311.

It is not an unprimeable number, because it can be changed into a prime (1138400519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216665 + ... + 221856.

It is an arithmetic number, because the mean of its divisors is an integer number (92089620).

Almost surely, 2^1138400516 is an apocalyptic number.

It is an amenable number.

1138400516 is a deficient number, since it is larger than the sum of its proper divisors (1071750364).

1138400516 is a wasteful number, since it uses less digits than its factorization.

1138400516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438595 (or 438593 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 1138400516 is about 33740.1914043178. The cubic root of 1138400516 is about 1044.1551334575.

Adding to 1138400516 its reverse (6150048311), we get a palindrome (7288448827).

The spelling of 1138400516 in words is "one billion, one hundred thirty-eight million, four hundred thousand, five hundred sixteen".