1161041536 has 16 divisors (see below), whose sum is σ = 2313012690. Its totient is φ = 580520704.

The previous prime is 1161041521. The next prime is 1161041549. The reversal of 1161041536 is 6351401611.

It can be written as a sum of positive squares in only one way, i.e., 1115560000 + 45481536 = 33400^2 + 6744^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4535191 + ... + 4535446.

Almost surely, 2^1161041536 is an apocalyptic number.

1161041536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1161041536 is a deficient number, since it is larger than the sum of its proper divisors (1151971154).

1161041536 is an frugal number, since it uses more digits than its factorization.

1161041536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9070651 (or 9070639 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1161041536 is about 34074.0595761644. The cubic root of 1161041536 is about 1051.0319517428.

The spelling of 1161041536 in words is "one billion, one hundred sixty-one million, forty-one thousand, five hundred thirty-six".