1361961816 has 32 divisors (see below), whose sum is σ = 3406718400. Its totient is φ = 453745440.

The previous prime is 1361961793. The next prime is 1361961827. The reversal of 1361961816 is 6181691631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34155 + ... + 62373.

It is an arithmetic number, because the mean of its divisors is an integer number (106459950).

Almost surely, 2^1361961816 is an apocalyptic number.

It is an amenable number.

1361961816 is an abundant number, since it is smaller than the sum of its proper divisors (2044756584).

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

1361961816 is a wasteful number, since it uses less digits than its factorization.

1361961816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30239 (or 30235 counting only the distinct ones).

The product of its digits is 46656, while the sum is 42.

The square root of 1361961816 is about 36904.7668465742. The cubic root of 1361961816 is about 1108.4641302111.

The spelling of 1361961816 in words is "one billion, three hundred sixty-one million, nine hundred sixty-one thousand, eight hundred sixteen".