1830521506997 has 2 divisors, whose sum is σ = 1830521506998. Its totient is φ = 1830521506996.

The previous prime is 1830521506987. The next prime is 1830521507051. The reversal of 1830521506997 is 7996051250381.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1233434581201 + 597086925796 = 1110601^2 + 772714^2 .

It is a cyclic number.

It is not a de Polignac number, because 1830521506997 - 2⁴ = 1830521506981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1830521506987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 915260753498 + 915260753499.

It is an arithmetic number, because the mean of its divisors is an integer number (915260753499).

Almost surely, 2^{1830521506997} is an apocalyptic number.

It is an amenable number.

1830521506997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1830521506997 is an equidigital number, since it uses as much as digits as its factorization.

1830521506997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4082400, while the sum is 56.

The spelling of 1830521506997 in words is "one trillion, eight hundred thirty billion, five hundred twenty-one million, five hundred six thousand, nine hundred ninety-seven".