1984613401 has 3 divisors (see below), whose sum is σ = 1984657951. Its totient is φ = 1984568852.

The previous prime is 1984613387. The next prime is 1984613417. The reversal of 1984613401 is 1043164891.

The square root of 1984613401 is 44549.

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 can be written as a sum of positive squares in only one way, i.e., 278923401 + 1705690000 = 16701^2 + 41300^2 .

It is not a de Polignac number, because 1984613401 - 2¹¹ = 1984611353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1984613801) 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, 22275 + ... + 66823.

Almost surely, 2^1984613401 is an apocalyptic number.

1984613401 is the 44549-th square number.

1984613401 is the 22275-th centered octagonal number.

It is an amenable number.

1984613401 is a deficient number, since it is larger than the sum of its proper divisors (44550).

1984613401 is an frugal number, since it uses more digits than its factorization.

1984613401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89098 (or 44549 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The cubic root of 1984613401 is about 1256.6817453304.

Multiplying 1984613401 by its product of nonzero digits (20736), we get a square (41152943483136 = 6415056²).

The spelling of 1984613401 in words is "one billion, nine hundred eighty-four million, six hundred thirteen thousand, four hundred one".