1487946497897 has 2 divisors, whose sum is σ = 1487946497898. Its totient is φ = 1487946497896.

The previous prime is 1487946497803. The next prime is 1487946497909. The reversal of 1487946497897 is 7987946497841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1310702129881 + 177244368016 = 1144859^2 + 421004^2 .

It is a cyclic number.

It is not a de Polignac number, because 1487946497897 - 2¹² = 1487946493801 is a prime.

It is not a weakly prime, because it can be changed into another prime (1487946497497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 743973248948 + 743973248949.

It is an arithmetic number, because the mean of its divisors is an integer number (743973248949).

Almost surely, 2^{1487946497897} is an apocalyptic number.

It is an amenable number.

1487946497897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1487946497897 is an equidigital number, since it uses as much as digits as its factorization.

1487946497897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6145155072, while the sum is 83.

The spelling of 1487946497897 in words is "one trillion, four hundred eighty-seven billion, nine hundred forty-six million, four hundred ninety-seven thousand, eight hundred ninety-seven".