1361224655 has 16 divisors (see below), whose sum is σ = 1904923200. Its totient is φ = 933410016.

The previous prime is 1361224609. The next prime is 1361224751. The reversal of 1361224655 is 5564221631.

It is not a de Polignac number, because 1361224655 - 2¹² = 1361220559 is a prime.

It is a super-2 number, since 2×1361224655² = 3705865122759738050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 395144 + ... + 398573.

It is an arithmetic number, because the mean of its divisors is an integer number (119057700).

Almost surely, 2^1361224655 is an apocalyptic number.

1361224655 is a deficient number, since it is larger than the sum of its proper divisors (543698545).

1361224655 is an frugal number, since it uses more digits than its factorization.

1361224655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793743 (or 793729 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 1361224655 is about 36894.7781535545. The cubic root of 1361224655 is about 1108.2641089421.

The spelling of 1361224655 in words is "one billion, three hundred sixty-one million, two hundred twenty-four thousand, six hundred fifty-five".