1520984851 has 2 divisors, whose sum is σ = 1520984852. Its totient is φ = 1520984850.

The previous prime is 1520984809. The next prime is 1520984873. The reversal of 1520984851 is 1584890251.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1520984851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1520984798 and 1520984807.

It is not a weakly prime, because it can be changed into another prime (1520984251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760492425 + 760492426.

It is an arithmetic number, because the mean of its divisors is an integer number (760492426).

Almost surely, 2^1520984851 is an apocalyptic number.

1520984851 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520984851 is an equidigital number, since it uses as much as digits as its factorization.

1520984851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 43.

The square root of 1520984851 is about 38999.8057815677. The cubic root of 1520984851 is about 1150.0276870461.

The spelling of 1520984851 in words is "one billion, five hundred twenty million, nine hundred eighty-four thousand, eight hundred fifty-one".