1214491385 has 4 divisors (see below), whose sum is σ = 1457389668. Its totient is φ = 971593104.

The previous prime is 1214491363. The next prime is 1214491391. The reversal of 1214491385 is 5831944121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 788935744 + 425555641 = 28088^2 + 20629^2 .

It is a cyclic number.

It is not a de Polignac number, because 1214491385 - 2¹⁸ = 1214229241 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121449134 + ... + 121449143.

It is an arithmetic number, because the mean of its divisors is an integer number (364347417).

Almost surely, 2^1214491385 is an apocalyptic number.

It is an amenable number.

1214491385 is a deficient number, since it is larger than the sum of its proper divisors (242898283).

1214491385 is an equidigital number, since it uses as much as digits as its factorization.

1214491385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242898282.

The product of its digits is 34560, while the sum is 38.

The square root of 1214491385 is about 34849.5535839414. The cubic root of 1214491385 is about 1066.9190743278.

The spelling of 1214491385 in words is "one billion, two hundred fourteen million, four hundred ninety-one thousand, three hundred eighty-five".