1520060999 has 4 divisors (see below), whose sum is σ = 1520160000. Its totient is φ = 1519962000.

The previous prime is 1520060963. The next prime is 1520061017. The reversal of 1520060999 is 9990600251.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9990600251 = 37 ⋅270016223.

It is a cyclic number.

It is not a de Polignac number, because 1520060999 - 2²⁴ = 1503283783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520060909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20999 + ... + 59000.

It is an arithmetic number, because the mean of its divisors is an integer number (380040000).

Almost surely, 2^1520060999 is an apocalyptic number.

1520060999 is a deficient number, since it is larger than the sum of its proper divisors (99001).

1520060999 is an equidigital number, since it uses as much as digits as its factorization.

1520060999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99000.

The product of its (nonzero) digits is 43740, while the sum is 41.

The square root of 1520060999 is about 38987.9596670562. The cubic root of 1520060999 is about 1149.7947961522.

The spelling of 1520060999 in words is "one billion, five hundred twenty million, sixty thousand, nine hundred ninety-nine".