1138396801 has 4 divisors (see below), whose sum is σ = 1140990400. Its totient is φ = 1135803204.

The previous prime is 1138396751. The next prime is 1138396811. The reversal of 1138396801 is 1086938311.

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: 1086938311 = 7949 ⋅136739.

It is a cyclic number.

It is not a de Polignac number, because 1138396801 - 2⁷ = 1138396673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1138396811) 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, 1296141 + ... + 1297018.

It is an arithmetic number, because the mean of its divisors is an integer number (285247600).

Almost surely, 2^1138396801 is an apocalyptic number.

It is an amenable number.

1138396801 is a deficient number, since it is larger than the sum of its proper divisors (2593599).

1138396801 is an equidigital number, since it uses as much as digits as its factorization.

1138396801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2593598.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 1138396801 is about 33740.1363512360. The cubic root of 1138396801 is about 1044.1539976415.

The spelling of 1138396801 in words is "one billion, one hundred thirty-eight million, three hundred ninety-six thousand, eight hundred one".