149427378 has 24 divisors (see below), whose sum is σ = 334204416. Its totient is φ = 48202200.

The previous prime is 149427367. The next prime is 149427427. The reversal of 149427378 is 873724941.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133338 + ... + 134453.

It is an arithmetic number, because the mean of its divisors is an integer number (13925184).

Almost surely, 2^149427378 is an apocalyptic number.

149427378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

149427378 is an abundant number, since it is smaller than the sum of its proper divisors (184777038).

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

149427378 is a wasteful number, since it uses less digits than its factorization.

149427378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267830 (or 267827 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 149427378 is about 12224.0491654770. The cubic root of 149427378 is about 530.6523094403.

The spelling of 149427378 in words is "one hundred forty-nine million, four hundred twenty-seven thousand, three hundred seventy-eight".