1243645346 has 8 divisors (see below), whose sum is σ = 1866592080. Its totient is φ = 621447988.

The previous prime is 1243645339. The next prime is 1243645349. The reversal of 1243645346 is 6435463421.

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

It is not an unprimeable number, because it can be changed into a prime (1243645349) 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, 183176 + ... + 189843.

It is an arithmetic number, because the mean of its divisors is an integer number (233324010).

Almost surely, 2^1243645346 is an apocalyptic number.

1243645346 is a deficient number, since it is larger than the sum of its proper divisors (622946734).

1243645346 is a wasteful number, since it uses less digits than its factorization.

1243645346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374688.

The product of its digits is 207360, while the sum is 38.

The square root of 1243645346 is about 35265.3561728788. The cubic root of 1243645346 is about 1075.3888179953.

The spelling of 1243645346 in words is "one billion, two hundred forty-three million, six hundred forty-five thousand, three hundred forty-six".