1161012941 has 32 divisors (see below), whose sum is σ = 1348116480. Its totient is φ = 989956800.

The previous prime is 1161012871. The next prime is 1161012953. The reversal of 1161012941 is 1492101611.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1161012941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1161012941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161012241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3163340 + ... + 3163706.

It is an arithmetic number, because the mean of its divisors is an integer number (42128640).

Almost surely, 2^1161012941 is an apocalyptic number.

1161012941 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1161012941 is a deficient number, since it is larger than the sum of its proper divisors (187103539).

1161012941 is a wasteful number, since it uses less digits than its factorization.

1161012941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 1161012941 is about 34073.6399728588. The cubic root of 1161012941 is about 1051.0233231381.

The spelling of 1161012941 in words is "one billion, one hundred sixty-one million, twelve thousand, nine hundred forty-one".