151868 has 6 divisors (see below), whose sum is σ = 265776. Its totient is φ = 75932.

The previous prime is 151849. The next prime is 151871. The reversal of 151868 is 868151.

It is a self number, because there is not a number n which added to its sum of digits gives 151868.

It is a congruent number.

It is an unprimeable number.

151868 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18980 + ... + 18987.

It is an arithmetic number, because the mean of its divisors is an integer number (44296).

2¹⁵¹⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

151868 is a deficient number, since it is larger than the sum of its proper divisors (113908).

151868 is a wasteful number, since it uses less digits than its factorization.

151868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37971 (or 37969 counting only the distinct ones).

The product of its digits is 1920, while the sum is 29.

The square root of 151868 is about 389.7024505953. The cubic root of 151868 is about 53.3525798592.

The spelling of 151868 in words is "one hundred fifty-one thousand, eight hundred sixty-eight".