1213746346 has 8 divisors (see below), whose sum is σ = 1820770884. Its totient is φ = 606822720.

The previous prime is 1213746319. The next prime is 1213746371. The reversal of 1213746346 is 6436473121.

It can be written as a sum of positive squares in 2 ways, for example, as 912342025 + 301404321 = 30205^2 + 17361^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24256 + ... + 54916.

Almost surely, 2^1213746346 is an apocalyptic number.

1213746346 is a deficient number, since it is larger than the sum of its proper divisors (607024538).

1213746346 is a wasteful number, since it uses less digits than its factorization.

1213746346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50456.

The product of its digits is 72576, while the sum is 37.

The square root of 1213746346 is about 34838.8625818927. The cubic root of 1213746346 is about 1066.7008598197.

The spelling of 1213746346 in words is "one billion, two hundred thirteen million, seven hundred forty-six thousand, three hundred forty-six".