1611311361 has 8 divisors (see below), whose sum is σ = 2343725664. Its totient is φ = 976552320.

The previous prime is 1611311327. The next prime is 1611311381. The reversal of 1611311361 is 1631131161.

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

It is not a de Polignac number, because 1611311361 - 2¹¹ = 1611309313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1611311381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24413776 + ... + 24413841.

It is an arithmetic number, because the mean of its divisors is an integer number (292965708).

Almost surely, 2^1611311361 is an apocalyptic number.

1611311361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1611311361 is a deficient number, since it is larger than the sum of its proper divisors (732414303).

1611311361 is a wasteful number, since it uses less digits than its factorization.

1611311361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48827631.

The product of its digits is 324, while the sum is 24.

The square root of 1611311361 is about 40141.1429956846. The cubic root of 1611311361 is about 1172.3568439051.

The spelling of 1611311361 in words is "one billion, six hundred eleven million, three hundred eleven thousand, three hundred sixty-one".