1520490311 has 2 divisors, whose sum is σ = 1520490312. Its totient is φ = 1520490310.

The previous prime is 1520490269. The next prime is 1520490313. The reversal of 1520490311 is 1130940251.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1520490311 is a prime.

Together with 1520490313, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1520490313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760245155 + 760245156.

It is an arithmetic number, because the mean of its divisors is an integer number (760245156).

Almost surely, 2^1520490311 is an apocalyptic number.

1520490311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520490311 is an equidigital number, since it uses as much as digits as its factorization.

1520490311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1520490311 is about 38993.4649781217. The cubic root of 1520490311 is about 1149.9030317734.

The spelling of 1520490311 in words is "one billion, five hundred twenty million, four hundred ninety thousand, three hundred eleven".