153121868 has 24 divisors (see below), whose sum is σ = 271122432. Its totient is φ = 75663504.

The previous prime is 153121853. The next prime is 153121877. The reversal of 153121868 is 868121351.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194171 + ... + 194957.

It is an arithmetic number, because the mean of its divisors is an integer number (11296768).

Almost surely, 2^153121868 is an apocalyptic number.

It is an amenable number.

153121868 is a deficient number, since it is larger than the sum of its proper divisors (118000564).

153121868 is a wasteful number, since it uses less digits than its factorization.

153121868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301 (or 1299 counting only the distinct ones).

The product of its digits is 11520, while the sum is 35.

The square root of 153121868 is about 12374.2421182067. The cubic root of 153121868 is about 534.9900926922.

The spelling of 153121868 in words is "one hundred fifty-three million, one hundred twenty-one thousand, eight hundred sixty-eight".