1797844801 has 9 divisors (see below), whose sum is σ = 1819166601. Its totient is φ = 1776771504.

The previous prime is 1797844759. The next prime is 1797844819. The reversal of 1797844801 is 1084487971.

The square root of 1797844801 is 42401.

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

It can be written as a sum of positive squares in 4 ways, for example, as 10246401 + 1787598400 = 3201^2 + 42280^2 .

It is not a de Polignac number, because 1797844801 - 2²¹ = 1795747649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1797844861) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4621515 + ... + 4621903.

Almost surely, 2^1797844801 is an apocalyptic number.

1797844801 is the 42401-st square number.

1797844801 is the 21201-st centered octagonal number.

It is an amenable number.

1797844801 is a deficient number, since it is larger than the sum of its proper divisors (21321800).

1797844801 is an frugal number, since it uses more digits than its factorization.

1797844801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996 (or 498 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 49.

The cubic root of 1797844801 is about 1215.9547105654.

Multiplying 1797844801 by its sum of digits (49), we get a square (88094395249 = 296807²).

Multiplying 1797844801 by its product of nonzero digits (451584), we get a square (811877946614784 = 28493472²).

The spelling of 1797844801 in words is "one billion, seven hundred ninety-seven million, eight hundred forty-four thousand, eight hundred one".