1980358547 has 2 divisors, whose sum is σ = 1980358548. Its totient is φ = 1980358546.

The previous prime is 1980358531. The next prime is 1980358607. The reversal of 1980358547 is 7458530891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1980358547 - 2⁴ = 1980358531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1980358495 and 1980358504.

It is not a weakly prime, because it can be changed into another prime (1980358517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 990179273 + 990179274.

It is an arithmetic number, because the mean of its divisors is an integer number (990179274).

Almost surely, 2^1980358547 is an apocalyptic number.

1980358547 is a deficient number, since it is larger than the sum of its proper divisors (1).

1980358547 is an equidigital number, since it uses as much as digits as its factorization.

1980358547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The square root of 1980358547 is about 44501.2196125005. The cubic root of 1980358547 is about 1255.7830273759.

The spelling of 1980358547 in words is "one billion, nine hundred eighty million, three hundred fifty-eight thousand, five hundred forty-seven".