1138203745 has 16 divisors (see below), whose sum is σ = 1614792960. Its totient is φ = 753568704.

The previous prime is 1138203739. The next prime is 1138203749. The reversal of 1138203745 is 5473028311.

It is not a de Polignac number, because 1138203745 - 2⁵ = 1138203713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1138203745.

It is not an unprimeable number, because it can be changed into a prime (1138203749) 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, 559677 + ... + 561706.

It is an arithmetic number, because the mean of its divisors is an integer number (100924560).

Almost surely, 2^1138203745 is an apocalyptic number.

It is an amenable number.

1138203745 is a deficient number, since it is larger than the sum of its proper divisors (476589215).

1138203745 is a wasteful number, since it uses less digits than its factorization.

1138203745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121424.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 1138203745 is about 33737.2753049205. The cubic root of 1138203745 is about 1044.0949697202.

The spelling of 1138203745 in words is "one billion, one hundred thirty-eight million, two hundred three thousand, seven hundred forty-five".