1797216201 has 16 divisors (see below), whose sum is σ = 2904592320. Its totient is φ = 1089221760.

The previous prime is 1797216131. The next prime is 1797216247. The reversal of 1797216201 is 1026127971.

It is a happy number.

1797216201 is a `hidden beast` number, since 1 + 7 + 9 + 7 + 21 + 620 + 1 = 666.

It is not a de Polignac number, because 1797216201 - 2¹⁵ = 1797183433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1797216401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3025320 + ... + 3025913.

It is an arithmetic number, because the mean of its divisors is an integer number (181537020).

Almost surely, 2^1797216201 is an apocalyptic number.

1797216201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1797216201 is a deficient number, since it is larger than the sum of its proper divisors (1107376119).

1797216201 is a wasteful number, since it uses less digits than its factorization.

1797216201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6051253 (or 6051247 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 1797216201 is about 42393.5867909286. The cubic root of 1797216201 is about 1215.8129782293.

The spelling of 1797216201 in words is "one billion, seven hundred ninety-seven million, two hundred sixteen thousand, two hundred one".