1214571813 has 32 divisors (see below), whose sum is σ = 1995705600. Its totient is φ = 639830016.

The previous prime is 1214571781. The next prime is 1214571821. The reversal of 1214571813 is 3181754121.

It is not a de Polignac number, because 1214571813 - 2⁵ = 1214571781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214572813) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 251223 + ... + 256011.

It is an arithmetic number, because the mean of its divisors is an integer number (62365800).

Almost surely, 2^1214571813 is an apocalyptic number.

1214571813 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1214571813 is a deficient number, since it is larger than the sum of its proper divisors (781133787).

1214571813 is a wasteful number, since it uses less digits than its factorization.

1214571813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5741.

The product of its digits is 6720, while the sum is 33.

The square root of 1214571813 is about 34850.7074964053. The cubic root of 1214571813 is about 1066.9426255511.

The spelling of 1214571813 in words is "one billion, two hundred fourteen million, five hundred seventy-one thousand, eight hundred thirteen".