1138217473 has 16 divisors (see below), whose sum is σ = 1225388736. Its totient is φ = 1053445120.

The previous prime is 1138217459. The next prime is 1138217489. The reversal of 1138217473 is 3747128311.

It is a happy number.

It is not a de Polignac number, because 1138217473 - 2¹⁷ = 1138086401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1138217573) 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, 249390 + ... + 253912.

It is an arithmetic number, because the mean of its divisors is an integer number (76586796).

Almost surely, 2^1138217473 is an apocalyptic number.

It is an amenable number.

1138217473 is a deficient number, since it is larger than the sum of its proper divisors (87171263).

1138217473 is a wasteful number, since it uses less digits than its factorization.

1138217473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4784.

The product of its digits is 28224, while the sum is 37.

The square root of 1138217473 is about 33737.4787587929. The cubic root of 1138217473 is about 1044.0991673512.

The spelling of 1138217473 in words is "one billion, one hundred thirty-eight million, two hundred seventeen thousand, four hundred seventy-three".