1153772538 has 8 divisors (see below), whose sum is σ = 2307545088. Its totient is φ = 384590844.

The previous prime is 1153772533. The next prime is 1153772551. The reversal of 1153772538 is 8352773511.

It is a happy number.

1153772538 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

1153772538 is an admirable number.

It is a super-2 number, since 2×1153772538² = 2662382138885922888, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1153772538.

It is not an unprimeable number, because it can be changed into a prime (1153772531) 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, 96147706 + ... + 96147717.

It is an arithmetic number, because the mean of its divisors is an integer number (288443136).

Almost surely, 2^1153772538 is an apocalyptic number.

1153772538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1153772538 is a wasteful number, since it uses less digits than its factorization.

1153772538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192295428.

The product of its digits is 176400, while the sum is 42.

The square root of 1153772538 is about 33967.2274111385. The cubic root of 1153772538 is about 1048.8339399980.

The spelling of 1153772538 in words is "one billion, one hundred fifty-three million, seven hundred seventy-two thousand, five hundred thirty-eight".