1138348513 has 4 divisors (see below), whose sum is σ = 1177601940. Its totient is φ = 1099095088.

The previous prime is 1138348483. The next prime is 1138348529. The reversal of 1138348513 is 3158438311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 821223649 + 317124864 = 28657^2 + 17808^2 .

It is a cyclic number.

It is not a de Polignac number, because 1138348513 - 2¹³ = 1138340321 is a prime.

It is a super-2 number, since 2×1138348513² = 2591674674098622338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1138348583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19626670 + ... + 19626727.

It is an arithmetic number, because the mean of its divisors is an integer number (294400485).

Almost surely, 2^1138348513 is an apocalyptic number.

It is an amenable number.

1138348513 is a deficient number, since it is larger than the sum of its proper divisors (39253427).

1138348513 is an equidigital number, since it uses as much as digits as its factorization.

1138348513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39253426.

The product of its digits is 34560, while the sum is 37.

The square root of 1138348513 is about 33739.4207567350. The cubic root of 1138348513 is about 1044.1392339489.

The spelling of 1138348513 in words is "one billion, one hundred thirty-eight million, three hundred forty-eight thousand, five hundred thirteen".