151986 has 16 divisors (see below), whose sum is σ = 309024. Its totient is φ = 49824.

The previous prime is 151969. The next prime is 152003. The reversal of 151986 is 689151.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (151969) and next prime (152003).

It is a congruent number.

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, 265 + ... + 611.

It is an arithmetic number, because the mean of its divisors is an integer number (19314).

2¹⁵¹⁹⁸⁶ is an apocalyptic number.

151986 is an abundant number, since it is smaller than the sum of its proper divisors (157038).

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

151986 is a wasteful number, since it uses less digits than its factorization.

151986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425.

The product of its digits is 2160, while the sum is 30.

The square root of 151986 is about 389.8538187577. The cubic root of 151986 is about 53.3663944319.

The spelling of 151986 in words is "one hundred fifty-one thousand, nine hundred eighty-six".