1520068861 has 8 divisors (see below), whose sum is σ = 1561775040. Its totient is φ = 1478894208.

The previous prime is 1520068829. The next prime is 1520068897. The reversal of 1520068861 is 1688600251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1520068861 - 2⁵ = 1520068829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1520068861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520068811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127081 + ... + 138526.

It is an arithmetic number, because the mean of its divisors is an integer number (195221880).

Almost surely, 2^1520068861 is an apocalyptic number.

It is an amenable number.

1520068861 is a deficient number, since it is larger than the sum of its proper divisors (41706179).

1520068861 is an equidigital number, since it uses as much as digits as its factorization.

1520068861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265763.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 1520068861 is about 38988.0604929253. The cubic root of 1520068861 is about 1149.7967784567.

The spelling of 1520068861 in words is "one billion, five hundred twenty million, sixty-eight thousand, eight hundred sixty-one".