148972778 has 16 divisors (see below), whose sum is σ = 227487744. Its totient is φ = 73155600.

The previous prime is 148972753. The next prime is 148972823. The reversal of 148972778 is 877279841.

148972778 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22751 + ... + 28557.

It is an arithmetic number, because the mean of its divisors is an integer number (14217984).

Almost surely, 2^148972778 is an apocalyptic number.

148972778 is a deficient number, since it is larger than the sum of its proper divisors (78514966).

148972778 is a wasteful number, since it uses less digits than its factorization.

148972778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6037.

The product of its digits is 1580544, while the sum is 53.

The square root of 148972778 is about 12205.4405082324. The cubic root of 148972778 is about 530.1136317410.

The spelling of 148972778 in words is "one hundred forty-eight million, nine hundred seventy-two thousand, seven hundred seventy-eight".