151686978 has 16 divisors (see below), whose sum is σ = 316564416. Its totient is φ = 48363920.

The previous prime is 151686959. The next prime is 151687009. The reversal of 151686978 is 879686151.

It is a self number, because there is not a number n which added to its sum of digits gives 151686978.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 549453 + ... + 549728.

It is an arithmetic number, because the mean of its divisors is an integer number (19785276).

Almost surely, 2^151686978 is an apocalyptic number.

151686978 is an abundant number, since it is smaller than the sum of its proper divisors (164877438).

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

151686978 is a wasteful number, since it uses less digits than its factorization.

151686978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099209.

The product of its digits is 725760, while the sum is 51.

The square root of 151686978 is about 12316.1267450445. The cubic root of 151686978 is about 533.3137321789.

The spelling of 151686978 in words is "one hundred fifty-one million, six hundred eighty-six thousand, nine hundred seventy-eight".