1243690804 has 12 divisors (see below), whose sum is σ = 2197590304. Its totient is φ = 615807864.

The previous prime is 1243690801. The next prime is 1243690831. The reversal of 1243690804 is 4080963421.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243690801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1508922 + ... + 1509745.

Almost surely, 2^1243690804 is an apocalyptic number.

It is an amenable number.

1243690804 is a deficient number, since it is larger than the sum of its proper divisors (953899500).

1243690804 is a wasteful number, since it uses less digits than its factorization.

1243690804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3018774 (or 3018772 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 1243690804 is about 35266.0006805422. Note that the first 3 decimals coincide. The cubic root of 1243690804 is about 1075.4019204524.

The spelling of 1243690804 in words is "one billion, two hundred forty-three million, six hundred ninety thousand, eight hundred four".