1520021068 has 12 divisors (see below), whose sum is σ = 2816509752. Its totient is φ = 715304000.

The previous prime is 1520021057. The next prime is 1520021089. The reversal of 1520021068 is 8601200251.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11176558 + ... + 11176693.

It is an arithmetic number, because the mean of its divisors is an integer number (234709146).

Almost surely, 2^1520021068 is an apocalyptic number.

It is an amenable number.

1520021068 is a deficient number, since it is larger than the sum of its proper divisors (1296488684).

1520021068 is a wasteful number, since it uses less digits than its factorization.

1520021068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22353272 (or 22353270 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1520021068 is about 38987.4475696986. The cubic root of 1520021068 is about 1149.7847279470.

The spelling of 1520021068 in words is "one billion, five hundred twenty million, twenty-one thousand, sixty-eight".