150778945 has 8 divisors (see below), whose sum is σ = 183413736. Its totient is φ = 118970496.

The previous prime is 150778939. The next prime is 150778949. The reversal of 150778945 is 549877051.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 34656769 + 116122176 = 5887^2 + 10776^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 150778945 - 2⁵ = 150778913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 150778895 and 150778904.

It is not an unprimeable number, because it can be changed into a prime (150778949) 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 in 7 ways as a sum of consecutive naturals, for example, 206182 + ... + 206911.

It is an arithmetic number, because the mean of its divisors is an integer number (22926717).

Almost surely, 2^150778945 is an apocalyptic number.

It is an amenable number.

150778945 is a deficient number, since it is larger than the sum of its proper divisors (32634791).

150778945 is an equidigital number, since it uses as much as digits as its factorization.

150778945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413171.

The product of its (nonzero) digits is 352800, while the sum is 46.

The square root of 150778945 is about 12279.2078327553. The cubic root of 150778945 is about 532.2474222225.

The spelling of 150778945 in words is "one hundred fifty million, seven hundred seventy-eight thousand, nine hundred forty-five".