1361683481 has 4 divisors (see below), whose sum is σ = 1374176100. Its totient is φ = 1349190864.

The previous prime is 1361683471. The next prime is 1361683517. The reversal of 1361683481 is 1843861631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1007491081 + 354192400 = 31741^2 + 18820^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361683481 - 2¹⁰ = 1361682457 is a prime.

It is a super-2 number, since 2×1361683481² = 3708363804856554722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1361683441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6246146 + ... + 6246363.

It is an arithmetic number, because the mean of its divisors is an integer number (343544025).

Almost surely, 2^1361683481 is an apocalyptic number.

It is an amenable number.

1361683481 is a deficient number, since it is larger than the sum of its proper divisors (12492619).

1361683481 is a wasteful number, since it uses less digits than its factorization.

1361683481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12492618.

The product of its digits is 82944, while the sum is 41.

The square root of 1361683481 is about 36900.9956640739. The cubic root of 1361683481 is about 1108.3886152739.

The spelling of 1361683481 in words is "one billion, three hundred sixty-one million, six hundred eighty-three thousand, four hundred eighty-one".