1361215216 has 10 divisors (see below), whose sum is σ = 2637354512. Its totient is φ = 680607600.

The previous prime is 1361215213. The next prime is 1361215223. The reversal of 1361215216 is 6125121631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361215213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42537960 + ... + 42537991.

Almost surely, 2^1361215216 is an apocalyptic number.

1361215216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1361215216 is a deficient number, since it is larger than the sum of its proper divisors (1276139296).

1361215216 is an equidigital number, since it uses as much as digits as its factorization.

1361215216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85075959 (or 85075953 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 1361215216 is about 36894.6502355016. The cubic root of 1361215216 is about 1108.2615472956.

Adding to 1361215216 its reverse (6125121631), we get a palindrome (7486336847).

The spelling of 1361215216 in words is "one billion, three hundred sixty-one million, two hundred fifteen thousand, two hundred sixteen".