1212984783 has 6 divisors (see below), whose sum is σ = 1752089144. Its totient is φ = 808656516.

The previous prime is 1212984781. The next prime is 1212984791. The reversal of 1212984783 is 3874892121.

It is a happy number.

It is not a de Polignac number, because 1212984783 - 2¹ = 1212984781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212984781) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67388035 + ... + 67388052.

Almost surely, 2^1212984783 is an apocalyptic number.

1212984783 is a deficient number, since it is larger than the sum of its proper divisors (539104361).

1212984783 is a wasteful number, since it uses less digits than its factorization.

1212984783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134776093 (or 134776090 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 1212984783 is about 34827.9310755032. The cubic root of 1212984783 is about 1066.4777132857.

The spelling of 1212984783 in words is "one billion, two hundred twelve million, nine hundred eighty-four thousand, seven hundred eighty-three".