149271378 has 16 divisors (see below), whose sum is σ = 299360640. Its totient is φ = 49620816.

The previous prime is 149271347. The next prime is 149271379. The reversal of 149271378 is 873172941.

149271378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (149271379) 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, 31693 + ... + 36096.

It is an arithmetic number, because the mean of its divisors is an integer number (18710040).

Almost surely, 2^149271378 is an apocalyptic number.

149271378 is an abundant number, since it is smaller than the sum of its proper divisors (150089262).

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

149271378 is a wasteful number, since it uses less digits than its factorization.

149271378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68161.

The product of its digits is 84672, while the sum is 42.

The square root of 149271378 is about 12217.6666348366. Note that the first 4 decimals coincide. The cubic root of 149271378 is about 530.4675807207.

The spelling of 149271378 in words is "one hundred forty-nine million, two hundred seventy-one thousand, three hundred seventy-eight".