1135400623 has 8 divisors (see below), whose sum is σ = 1300839840. Its totient is φ = 970771200.

The previous prime is 1135400599. The next prime is 1135400627. The reversal of 1135400623 is 3260045311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1135400623 - 2⁹ = 1135400111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135400627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199438 + ... + 205051.

It is an arithmetic number, because the mean of its divisors is an integer number (162604980).

Almost surely, 2^1135400623 is an apocalyptic number.

1135400623 is a deficient number, since it is larger than the sum of its proper divisors (165439217).

1135400623 is an equidigital number, since it uses as much as digits as its factorization.

1135400623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404897.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1135400623 is about 33695.7062991711. The cubic root of 1135400623 is about 1043.2371468883.

Adding to 1135400623 its reverse (3260045311), we get a palindrome (4395445934).

The spelling of 1135400623 in words is "one billion, one hundred thirty-five million, four hundred thousand, six hundred twenty-three".