1883621747401 has 3 divisors (see below), whose sum is σ = 1883623119853. Its totient is φ = 1883620374950.

The previous prime is 1883621747387. The next prime is 1883621747407. The reversal of 1883621747401 is 1047471263881.

It is a happy number.

The square root of 1883621747401 is 1372451.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a de Polignac number, because none of the positive numbers 2^k-1883621747401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1883621747407) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 686226 + ... + 2058676.

Almost surely, 2^{1883621747401} is an apocalyptic number.

1883621747401 is the 1372451-st square number.

1883621747401 is the 686226-th centered octagonal number.

It is an amenable number.

1883621747401 is a deficient number, since it is larger than the sum of its proper divisors (1372452).

1883621747401 is an frugal number, since it uses more digits than its factorization.

1883621747401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2744902 (or 1372451 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 52.

The spelling of 1883621747401 in words is "one trillion, eight hundred eighty-three billion, six hundred twenty-one million, seven hundred forty-seven thousand, four hundred one".