1138107557 has 4 divisors (see below), whose sum is σ = 1174820736. Its totient is φ = 1101394380.

The previous prime is 1138107521. The next prime is 1138107559. The reversal of 1138107557 is 7557018311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7557018311 = 72173 ⋅104707.

It is a cyclic number.

It is not a de Polignac number, because 1138107557 - 2¹⁰ = 1138106533 is a prime.

It is a super-2 number, since 2×1138107557² = 2590577622601016498, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1138107557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138107559) 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, 18356543 + ... + 18356604.

It is an arithmetic number, because the mean of its divisors is an integer number (293705184).

Almost surely, 2^1138107557 is an apocalyptic number.

It is an amenable number.

1138107557 is a deficient number, since it is larger than the sum of its proper divisors (36713179).

1138107557 is an equidigital number, since it uses as much as digits as its factorization.

1138107557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36713178.

The product of its (nonzero) digits is 29400, while the sum is 38.

The square root of 1138107557 is about 33735.8497299238. The cubic root of 1138107557 is about 1044.0655572251.

The spelling of 1138107557 in words is "one billion, one hundred thirty-eight million, one hundred seven thousand, five hundred fifty-seven".