1161935538 has 24 divisors (see below), whose sum is σ = 2452621968. Its totient is φ = 366926328.

The previous prime is 1161935527. The next prime is 1161935539. The reversal of 1161935538 is 8355391611.

It is a self number, because there is not a number n which added to its sum of digits gives 1161935538.

It is not an unprimeable number, because it can be changed into a prime (1161935539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 266056 + ... + 270387.

It is an arithmetic number, because the mean of its divisors is an integer number (102192582).

Almost surely, 2^1161935538 is an apocalyptic number.

1161935538 is an abundant number, since it is smaller than the sum of its proper divisors (1290686430).

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

1161935538 is a wasteful number, since it uses less digits than its factorization.

1161935538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536486 (or 536467 counting only the distinct ones).

The product of its digits is 97200, while the sum is 42.

The square root of 1161935538 is about 34087.1755650127. The cubic root of 1161935538 is about 1051.3016474055.

The spelling of 1161935538 in words is "one billion, one hundred sixty-one million, nine hundred thirty-five thousand, five hundred thirty-eight".