1361497447 has 4 divisors (see below), whose sum is σ = 1367147056. Its totient is φ = 1355847840.

The previous prime is 1361497441. The next prime is 1361497453. The reversal of 1361497447 is 7447941631.

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

It is an interprime number because it is at equal distance from previous prime (1361497441) and next prime (1361497453).

It is a cyclic number.

It is not a de Polignac number, because 1361497447 - 2³ = 1361497439 is a prime.

It is a super-4 number, since 4×1361497447⁴ (a number of 38 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1361497397 and 1361497406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361497441) 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, 2824443 + ... + 2824924.

It is an arithmetic number, because the mean of its divisors is an integer number (341786764).

Almost surely, 2^1361497447 is an apocalyptic number.

1361497447 is a deficient number, since it is larger than the sum of its proper divisors (5649609).

1361497447 is an equidigital number, since it uses as much as digits as its factorization.

1361497447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5649608.

The product of its digits is 508032, while the sum is 46.

The square root of 1361497447 is about 36898.4748600806. The cubic root of 1361497447 is about 1108.3381367396.

It can be divided in two parts, 136149744 and 7, that added together give a triangular number (136149751 = T₁₆₅₀₁).

The spelling of 1361497447 in words is "one billion, three hundred sixty-one million, four hundred ninety-seven thousand, four hundred forty-seven".