1206365673949 has 4 divisors (see below), whose sum is σ = 1207879307964. Its totient is φ = 1204852039936.

The previous prime is 1206365673941. The next prime is 1206365673967. The reversal of 1206365673949 is 9493765636021.

It is a happy number.

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 628928302500 + 577437371449 = 793050^2 + 759893^2 .

It is a cyclic number.

It is not a de Polignac number, because 1206365673949 - 2³ = 1206365673941 is a prime.

It is a super-3 number, since 3×1206365673949³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206365673941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 756815812 + ... + 756817405.

It is an arithmetic number, because the mean of its divisors is an integer number (301969826991).

Almost surely, 2^{1206365673949} is an apocalyptic number.

It is an amenable number.

1206365673949 is a deficient number, since it is larger than the sum of its proper divisors (1513634015).

1206365673949 is an equidigital number, since it uses as much as digits as its factorization.

1206365673949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513634014.

The product of its (nonzero) digits is 44089920, while the sum is 61.

The spelling of 1206365673949 in words is "one trillion, two hundred six billion, three hundred sixty-five million, six hundred seventy-three thousand, nine hundred forty-nine".