1327181949 has 32 divisors (see below), whose sum is σ = 2069948160. Its totient is φ = 838785024.

The previous prime is 1327181887. The next prime is 1327181953. The reversal of 1327181949 is 9491817231.

It is not a de Polignac number, because 1327181949 - 2⁸ = 1327181693 is a prime.

It is a super-2 number, since 2×1327181949² = 3522823851502877202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1327188949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60717 + ... + 79629.

It is an arithmetic number, because the mean of its divisors is an integer number (64685880).

Almost surely, 2^1327181949 is an apocalyptic number.

It is an amenable number.

1327181949 is a deficient number, since it is larger than the sum of its proper divisors (742766211).

1327181949 is a wasteful number, since it uses less digits than its factorization.

1327181949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19058 (or 19052 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 1327181949 is about 36430.5084921965. The cubic root of 1327181949 is about 1098.9471879900.

The spelling of 1327181949 in words is "one billion, three hundred twenty-seven million, one hundred eighty-one thousand, nine hundred forty-nine".