1218485622 has 32 divisors (see below), whose sum is σ = 2497485312. Its totient is φ = 396136544.

The previous prime is 1218485617. The next prime is 1218485623. The reversal of 1218485622 is 2265848121.

It is a happy number.

It is a super-2 number, since 2×1218485622² = 2969414422041453768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218485623) 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, 75253 + ... + 89999.

It is an arithmetic number, because the mean of its divisors is an integer number (78046416).

Almost surely, 2^1218485622 is an apocalyptic number.

1218485622 is an abundant number, since it is smaller than the sum of its proper divisors (1278999690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1218485622 is a wasteful number, since it uses less digits than its factorization.

1218485622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15092.

The product of its digits is 61440, while the sum is 39.

The square root of 1218485622 is about 34906.8134036895. The cubic root of 1218485622 is about 1068.0874274401.

The spelling of 1218485622 in words is "one billion, two hundred eighteen million, four hundred eighty-five thousand, six hundred twenty-two".