1520213983 has 2 divisors, whose sum is σ = 1520213984. Its totient is φ = 1520213982.

The previous prime is 1520213971. The next prime is 1520214019. The reversal of 1520213983 is 3893120251.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1520213983 - 2⁵ = 1520213951 is a prime.

It is a super-2 number, since 2×1520213983² = 4622101108217448578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1520213963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760106991 + 760106992.

It is an arithmetic number, because the mean of its divisors is an integer number (760106992).

Almost surely, 2^1520213983 is an apocalyptic number.

1520213983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520213983 is an equidigital number, since it uses as much as digits as its factorization.

1520213983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 1520213983 is about 38989.9215567305. The cubic root of 1520213983 is about 1149.8333679171.

The spelling of 1520213983 in words is "one billion, five hundred twenty million, two hundred thirteen thousand, nine hundred eighty-three".