1361221274 has 12 divisors (see below), whose sum is σ = 2375192394. Its totient is φ = 583380504.

The previous prime is 1361221249. The next prime is 1361221319. The reversal of 1361221274 is 4721221631.

It can be written as a sum of positive squares in only one way, i.e., 1351077049 + 10144225 = 36757^2 + 3185^2 .

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 5 ways as a sum of consecutive naturals, for example, 6944909 + ... + 6945104.

Almost surely, 2^1361221274 is an apocalyptic number.

1361221274 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1361221274 is a deficient number, since it is larger than the sum of its proper divisors (1013971120).

1361221274 is a wasteful number, since it uses less digits than its factorization.

1361221274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13890029 (or 13890022 counting only the distinct ones).

The product of its digits is 4032, while the sum is 29.

The square root of 1361221274 is about 36894.7323340338. The cubic root of 1361221274 is about 1108.2631913752.

The spelling of 1361221274 in words is "one billion, three hundred sixty-one million, two hundred twenty-one thousand, two hundred seventy-four".