1361672081 has 8 divisors (see below), whose sum is σ = 1697669184. Its totient is φ = 1061043120.

The previous prime is 1361672071. The next prime is 1361672083. The reversal of 1361672081 is 1802761631.

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

It is a cyclic number.

It is not a de Polignac number, because 1361672081 - 2⁶ = 1361672017 is a prime.

It is a super-2 number, since 2×1361672081² = 3708301712349741122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1361672083) 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, 8841950 + ... + 8842103.

It is an arithmetic number, because the mean of its divisors is an integer number (212208648).

Almost surely, 2^1361672081 is an apocalyptic number.

1361672081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1361672081 is a deficient number, since it is larger than the sum of its proper divisors (335997103).

1361672081 is a wasteful number, since it uses less digits than its factorization.

1361672081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17684071.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1361672081 is about 36900.8411963738. The cubic root of 1361672081 is about 1108.3855221259.

The spelling of 1361672081 in words is "one billion, three hundred sixty-one million, six hundred seventy-two thousand, eighty-one".