1807421431604 has 12 divisors (see below), whose sum is σ = 3173782686564. Its totient is φ = 900626378304.

The previous prime is 1807421431601. The next prime is 1807421431633. The reversal of 1807421431604 is 4061341247081.

It can be written as a sum of positive squares in 2 ways, for example, as 910135080100 + 897286351504 = 954010^2 + 947252^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1807421431601) 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, 771083057 + ... + 771085400.

It is an arithmetic number, because the mean of its divisors is an integer number (264481890547).

Almost surely, 2^{1807421431604} is an apocalyptic number.

It is an amenable number.

1807421431604 is a deficient number, since it is larger than the sum of its proper divisors (1366361254960).

1807421431604 is a wasteful number, since it uses less digits than its factorization.

1807421431604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1542168754 (or 1542168752 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

Adding to 1807421431604 its reverse (4061341247081), we get a palindrome (5868762678685).

The spelling of 1807421431604 in words is "one trillion, eight hundred seven billion, four hundred twenty-one million, four hundred thirty-one thousand, six hundred four".