1138507 has 8 divisors (see below), whose sum is σ = 1215216. Its totient is φ = 1062912.

The previous prime is 1138483. The next prime is 1138519. The reversal of 1138507 is 7058311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1138507 - 2¹¹ = 1136459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1138547) 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, 3108 + ... + 3454.

It is an arithmetic number, because the mean of its divisors is an integer number (151902).

2^1138507 is an apocalyptic number.

1138507 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1138507 is a deficient number, since it is larger than the sum of its proper divisors (76709).

1138507 is a wasteful number, since it uses less digits than its factorization.

1138507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 1138507 is about 1067.0084348308. The cubic root of 1138507 is about 104.4187688593.

The spelling of 1138507 in words is "one million, one hundred thirty-eight thousand, five hundred seven".