151974978 has 16 divisors (see below), whose sum is σ = 305163936. Its totient is φ = 50456000.

The previous prime is 151974971. The next prime is 151974983. The reversal of 151974978 is 879479151.

It is a happy number.

151974978 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 151974978.

It is not an unprimeable number, because it can be changed into a prime (151974971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48951 + ... + 51962.

It is an arithmetic number, because the mean of its divisors is an integer number (19072746).

Almost surely, 2^151974978 is an apocalyptic number.

151974978 is an abundant number, since it is smaller than the sum of its proper divisors (153188958).

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

151974978 is a wasteful number, since it uses less digits than its factorization.

151974978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101169.

The product of its digits is 635040, while the sum is 51.

The square root of 151974978 is about 12327.8131880719. The cubic root of 151974978 is about 533.6510435996.

The spelling of 151974978 in words is "one hundred fifty-one million, nine hundred seventy-four thousand, nine hundred seventy-eight".