1509997068 has 72 divisors (see below), whose sum is σ = 3852969120. Its totient is φ = 498608640.

The previous prime is 1509997061. The next prime is 1509997079. The reversal of 1509997068 is 8607999051.

1509997068 is a `hidden beast` number, since 1 + 509 + 9 + 9 + 70 + 68 = 666.

It is a super-2 number, since 2×1509997068² = 4560182290737193248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1509997061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2333521 + ... + 2334167.

It is an arithmetic number, because the mean of its divisors is an integer number (53513460).

Almost surely, 2^1509997068 is an apocalyptic number.

1509997068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1509997068 is an abundant number, since it is smaller than the sum of its proper divisors (2342972052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1509997068 is a wasteful number, since it uses less digits than its factorization.

1509997068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167 (or 1162 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 54.

The square root of 1509997068 is about 38858.6807290212. The cubic root of 1509997068 is about 1147.2516773666.

The spelling of 1509997068 in words is "one billion, five hundred nine million, nine hundred ninety-seven thousand, sixty-eight".