1214520385 has 16 divisors (see below), whose sum is σ = 1570519440. Its totient is φ = 896313600.

The previous prime is 1214520371. The next prime is 1214520389. The reversal of 1214520385 is 5830254121.

It can be written as a sum of positive squares in 8 ways, for example, as 87441201 + 1127079184 = 9351^2 + 33572^2 .

It is not a de Polignac number, because 1214520385 - 2⁵ = 1214520353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1214520389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118651 + ... + 128479.

It is an arithmetic number, because the mean of its divisors is an integer number (98157465).

Almost surely, 2^1214520385 is an apocalyptic number.

It is an amenable number.

1214520385 is a deficient number, since it is larger than the sum of its proper divisors (355999055).

1214520385 is a wasteful number, since it uses less digits than its factorization.

1214520385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11748.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 1214520385 is about 34849.9696556539. The cubic root of 1214520385 is about 1066.9275663345.

The spelling of 1214520385 in words is "one billion, two hundred fourteen million, five hundred twenty thousand, three hundred eighty-five".