1619055201241 has 3 divisors (see below), whose sum is σ = 1619056473663. Its totient is φ = 1619053928820.

The previous prime is 1619055201187. The next prime is 1619055201277. The reversal of 1619055201241 is 1421025509161.

The square root of 1619055201241 is 1272421.

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., 1180201949641 + 438853251600 = 1086371^2 + 662460^2 .

It is not a de Polignac number, because 1619055201241 - 2¹⁵ = 1619055168473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1619055201241.

It is not an unprimeable number, because it can be changed into a prime (1619055202241) 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, 636211 + ... + 1908631.

It is an arithmetic number, because the mean of its divisors is an integer number (539685491221).

Almost surely, 2^{1619055201241} is an apocalyptic number.

1619055201241 is the 1272421-st square number.

1619055201241 is the 636211-st centered octagonal number.

It is an amenable number.

1619055201241 is a deficient number, since it is larger than the sum of its proper divisors (1272422).

1619055201241 is an frugal number, since it uses more digits than its factorization.

1619055201241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2544842 (or 1272421 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 37.

The spelling of 1619055201241 in words is "one trillion, six hundred nineteen billion, fifty-five million, two hundred one thousand, two hundred forty-one".