1361205630 has 48 divisors (see below), whose sum is σ = 3553293744. Its totient is φ = 361536000.

The previous prime is 1361205607. The next prime is 1361205631. The reversal of 1361205630 is 365021631.

1361205630 is a `hidden beast` number, since 1 + 3 + 6 + 1 + 20 + 5 + 630 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1361205594 and 1361205603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361205631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7539 + ... + 52718.

It is an arithmetic number, because the mean of its divisors is an integer number (74026953).

Almost surely, 2^1361205630 is an apocalyptic number.

1361205630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1361205630 is an abundant number, since it is smaller than the sum of its proper divisors (2192088114).

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

1361205630 is a wasteful number, since it uses less digits than its factorization.

1361205630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60521 (or 60518 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 1361205630 is about 36894.5203248396. The cubic root of 1361205630 is about 1108.2589457427.

The spelling of 1361205630 in words is "one billion, three hundred sixty-one million, two hundred five thousand, six hundred thirty".