1214781612 has 48 divisors (see below), whose sum is σ = 3134554752. Its totient is φ = 363070080.

The previous prime is 1214781611. The next prime is 1214781629. The reversal of 1214781612 is 2161874121.

It is a super-3 number, since 3×1214781612³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1214781611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53398 + ... + 72669.

It is an arithmetic number, because the mean of its divisors is an integer number (65303224).

Almost surely, 2^1214781612 is an apocalyptic number.

1214781612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1214781612 is an abundant number, since it is smaller than the sum of its proper divisors (1919773140).

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

1214781612 is a wasteful number, since it uses less digits than its factorization.

1214781612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126158 (or 126156 counting only the distinct ones).

The product of its digits is 5376, while the sum is 33.

The square root of 1214781612 is about 34853.7173340234. The cubic root of 1214781612 is about 1067.0040547742.

The spelling of 1214781612 in words is "one billion, two hundred fourteen million, seven hundred eighty-one thousand, six hundred twelve".