1361345730 has 16 divisors (see below), whose sum is σ = 3267229824. Its totient is φ = 363025520.

The previous prime is 1361345719. The next prime is 1361345759. The reversal of 1361345730 is 375431631.

It is a junction number, because it is equal to n+sod(n) for n = 1361345691 and 1361345700.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22689066 + ... + 22689125.

It is an arithmetic number, because the mean of its divisors is an integer number (204201864).

Almost surely, 2^1361345730 is an apocalyptic number.

1361345730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1361345730 is an abundant number, since it is smaller than the sum of its proper divisors (1905884094).

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

1361345730 is a wasteful number, since it uses less digits than its factorization.

1361345730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45378201.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 1361345730 is about 36896.4189319235. The cubic root of 1361345730 is about 1108.2969663886.

It can be divided in two parts, 1361345 and 730, that added together give a triangular number (1362075 = T₁₆₅₀).

The spelling of 1361345730 in words is "one billion, three hundred sixty-one million, three hundred forty-five thousand, seven hundred thirty".