150493978 has 4 divisors (see below), whose sum is σ = 225740970. Its totient is φ = 75246988.

The previous prime is 150493969. The next prime is 150493997. The reversal of 150493978 is 879394051.

It is a happy number.

150493978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 115412049 + 35081929 = 10743^2 + 5923^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37623493 + ... + 37623496.

Almost surely, 2^150493978 is an apocalyptic number.

150493978 is a deficient number, since it is larger than the sum of its proper divisors (75246992).

150493978 is an equidigital number, since it uses as much as digits as its factorization.

150493978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75246991.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 150493978 is about 12267.5987055332. The cubic root of 150493978 is about 531.9119010089.

The spelling of 150493978 in words is "one hundred fifty million, four hundred ninety-three thousand, nine hundred seventy-eight".