1138307406 has 16 divisors (see below), whose sum is σ = 2282563584. Its totient is φ = 378444344.

The previous prime is 1138307399. The next prime is 1138307407. The reversal of 1138307406 is 6047038311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138307407) 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, 245376 + ... + 249971.

It is an arithmetic number, because the mean of its divisors is an integer number (142660224).

Almost surely, 2^1138307406 is an apocalyptic number.

1138307406 is an abundant number, since it is smaller than the sum of its proper divisors (1144256178).

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

1138307406 is a wasteful number, since it uses less digits than its factorization.

1138307406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495735.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 1138307406 is about 33738.8115676886. The cubic root of 1138307406 is about 1044.1266654641.

The spelling of 1138307406 in words is "one billion, one hundred thirty-eight million, three hundred seven thousand, four hundred six".