1051138209 has 16 divisors (see below), whose sum is σ = 1544071104. Its totient is φ = 630744000.

The previous prime is 1051138199. The next prime is 1051138223. The reversal of 1051138209 is 9028311501.

1051138209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1051138209 - 2¹² = 1051134113 is a prime.

It is a super-2 number, since 2×1051138209² = 2209783068839455362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1051138289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154354 + ... + 161019.

It is an arithmetic number, because the mean of its divisors is an integer number (96504444).

Almost surely, 2^1051138209 is an apocalyptic number.

It is an amenable number.

1051138209 is a deficient number, since it is larger than the sum of its proper divisors (492932895).

1051138209 is a wasteful number, since it uses less digits than its factorization.

1051138209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315488.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 1051138209 is about 32421.2616811869. The cubic root of 1051138209 is about 1016.7634849777.

The spelling of 1051138209 in words is "one billion, fifty-one million, one hundred thirty-eight thousand, two hundred nine".