150151978 has 4 divisors (see below), whose sum is σ = 225227970. Its totient is φ = 75075988.

The previous prime is 150151951. The next prime is 150151979. The reversal of 150151978 is 879151051.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 148913209 + 1238769 = 12203^2 + 1113^2 .

It is not an unprimeable number, because it can be changed into a prime (150151979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37537993 + ... + 37537996.

Almost surely, 2^150151978 is an apocalyptic number.

150151978 is a deficient number, since it is larger than the sum of its proper divisors (75075992).

150151978 is an equidigital number, since it uses as much as digits as its factorization.

150151978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75075991.

The product of its (nonzero) digits is 12600, while the sum is 37.

The square root of 150151978 is about 12253.6516190073. The cubic root of 150151978 is about 531.5086692705.

The spelling of 150151978 in words is "one hundred fifty million, one hundred fifty-one thousand, nine hundred seventy-eight".