198769032487 has 2 divisors, whose sum is σ = 198769032488. Its totient is φ = 198769032486.

The previous prime is 198769032467. The next prime is 198769032491. The reversal of 198769032487 is 784230967891.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198769032487 is a prime.

It is a super-2 number, since 2×198769032487² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198769032467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99384516243 + 99384516244.

It is an arithmetic number, because the mean of its divisors is an integer number (99384516244).

Almost surely, 2^198769032487 is an apocalyptic number.

198769032487 is a deficient number, since it is larger than the sum of its proper divisors (1).

198769032487 is an equidigital number, since it uses as much as digits as its factorization.

198769032487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36578304, while the sum is 64.

The spelling of 198769032487 in words is "one hundred ninety-eight billion, seven hundred sixty-nine million, thirty-two thousand, four hundred eighty-seven".