149385878 has 8 divisors (see below), whose sum is σ = 229544280. Its totient is φ = 72871120.

The previous prime is 149385833. The next prime is 149385883. The reversal of 149385878 is 878583941.

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

It is a super-2 number, since 2×149385878² = 44632281091661768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 910808 + ... + 910971.

It is an arithmetic number, because the mean of its divisors is an integer number (28693035).

Almost surely, 2^149385878 is an apocalyptic number.

149385878 is a deficient number, since it is larger than the sum of its proper divisors (80158402).

149385878 is a wasteful number, since it uses less digits than its factorization.

149385878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821822.

The product of its digits is 1935360, while the sum is 53.

The square root of 149385878 is about 12222.3515740630. The cubic root of 149385878 is about 530.6031794211.

The spelling of 149385878 in words is "one hundred forty-nine million, three hundred eighty-five thousand, eight hundred seventy-eight".