1361664546 has 48 divisors (see below), whose sum is σ = 3013477824. Its totient is φ = 409860000.

The previous prime is 1361664533. The next prime is 1361664613. The reversal of 1361664546 is 6454661631.

It is a super-2 number, since 2×1361664546² = 3708260671666772232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1361664498 and 1361664507.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103416 + ... + 115836.

It is an arithmetic number, because the mean of its divisors is an integer number (62780788).

Almost surely, 2^1361664546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1361664546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1506738912).

1361664546 is an abundant number, since it is smaller than the sum of its proper divisors (1651813278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1361664546 is a wasteful number, since it uses less digits than its factorization.

1361664546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12599 (or 12588 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The square root of 1361664546 is about 36900.7390982891. The cubic root of 1361664546 is about 1108.3834776542.

The spelling of 1361664546 in words is "one billion, three hundred sixty-one million, six hundred sixty-four thousand, five hundred forty-six".