2520267909 has 16 divisors (see below), whose sum is σ = 3444456960. Its totient is φ = 1638179840.

The previous prime is 2520267899. The next prime is 2520267923. The reversal of 2520267909 is 9097620252.

It is a cyclic number.

It is not a de Polignac number, because 2520267909 - 2⁷ = 2520267781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520267929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226924 + ... + 237770.

It is an arithmetic number, because the mean of its divisors is an integer number (215278560).

Almost surely, 2^2520267909 is an apocalyptic number.

It is an amenable number.

2520267909 is a deficient number, since it is larger than the sum of its proper divisors (924189051).

2520267909 is a wasteful number, since it uses less digits than its factorization.

2520267909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12780.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 2520267909 is about 50202.2699586383. The cubic root of 2520267909 is about 1360.8666457547.

The spelling of 2520267909 in words is "two billion, five hundred twenty million, two hundred sixty-seven thousand, nine hundred nine".