1135551957 has 4 divisors (see below), whose sum is σ = 1514069280. Its totient is φ = 757034636.

The previous prime is 1135551947. The next prime is 1135551959. The reversal of 1135551957 is 7591555311.

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.

It is a cyclic number.

It is not a de Polignac number, because 1135551957 - 2¹⁹ = 1135027669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135551959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189258657 + ... + 189258662.

It is an arithmetic number, because the mean of its divisors is an integer number (378517320).

Almost surely, 2^1135551957 is an apocalyptic number.

It is an amenable number.

1135551957 is a deficient number, since it is larger than the sum of its proper divisors (378517323).

1135551957 is an equidigital number, since it uses as much as digits as its factorization.

1135551957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378517322.

The product of its digits is 118125, while the sum is 42.

The square root of 1135551957 is about 33697.9518220322. The cubic root of 1135551957 is about 1043.2834947686.

The spelling of 1135551957 in words is "one billion, one hundred thirty-five million, five hundred fifty-one thousand, nine hundred fifty-seven".