1138907 has 12 divisors (see below), whose sum is σ = 1445976. Its totient is φ = 887040.

The previous prime is 1138901. The next prime is 1138919. The reversal of 1138907 is 7098311.

It is not a de Polignac number, because 1138907 - 2¹⁰ = 1137883 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1138907.

It is not an unprimeable number, because it can be changed into a prime (1138901) 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, 518 + ... + 1595.

It is an arithmetic number, because the mean of its divisors is an integer number (120498).

2^1138907 is an apocalyptic number.

1138907 is a deficient number, since it is larger than the sum of its proper divisors (307069).

1138907 is a wasteful number, since it uses less digits than its factorization.

1138907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138 (or 2131 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 1138907 is about 1067.1958583128. The cubic root of 1138907 is about 104.4309961643.

The spelling of 1138907 in words is "one million, one hundred thirty-eight thousand, nine hundred seven".