203940571489 has 2 divisors, whose sum is σ = 203940571490. Its totient is φ = 203940571488.

The previous prime is 203940571433. The next prime is 203940571511. The reversal of 203940571489 is 984175049302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146612410000 + 57328161489 = 382900^2 + 239433^2 .

It is a cyclic number.

It is not a de Polignac number, because 203940571489 - 2¹³ = 203940563297 is a prime.

It is not a weakly prime, because it can be changed into another prime (203940571409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101970285744 + 101970285745.

It is an arithmetic number, because the mean of its divisors is an integer number (101970285745).

Almost surely, 2^203940571489 is an apocalyptic number.

It is an amenable number.

203940571489 is a deficient number, since it is larger than the sum of its proper divisors (1).

203940571489 is an equidigital number, since it uses as much as digits as its factorization.

203940571489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 203940571489 in words is "two hundred three billion, nine hundred forty million, five hundred seventy-one thousand, four hundred eighty-nine".