1161404416 has 28 divisors (see below), whose sum is σ = 2322683442. Its totient is φ = 580698112.

The previous prime is 1161404411. The next prime is 1161404443. The reversal of 1161404416 is 6144041611.

It can be written as a sum of positive squares in only one way, i.e., 1128960000 + 32444416 = 33600^2 + 5696^2 .

It is not an unprimeable number, because it can be changed into a prime (1161404411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62695 + ... + 79078.

Almost surely, 2^1161404416 is an apocalyptic number.

1161404416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1161404416 is a deficient number, since it is larger than the sum of its proper divisors (1161279026).

1161404416 is an frugal number, since it uses more digits than its factorization.

1161404416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141799 (or 141775 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1161404416 is about 34079.3840319921. The cubic root of 1161404416 is about 1051.1414392833.

The spelling of 1161404416 in words is "one billion, one hundred sixty-one million, four hundred four thousand, four hundred sixteen".