149819868 has 120 divisors (see below), whose sum is σ = 431929344. Its totient is φ = 44906400.

The previous prime is 149819867. The next prime is 149819881. The reversal of 149819868 is 868918941.

149819868 is a `hidden beast` number, since 1 + 498 + 1 + 98 + 68 = 666.

149819868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149819867) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 452463 + ... + 452793.

Almost surely, 2^149819868 is an apocalyptic number.

149819868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149819868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215964672).

149819868 is an abundant number, since it is smaller than the sum of its proper divisors (282109476).

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

149819868 is a wasteful number, since it uses less digits than its factorization.

149819868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 474 counting only the distinct ones).

The product of its digits is 995328, while the sum is 54.

The square root of 149819868 is about 12240.0926467082. The cubic root of 149819868 is about 531.1165118266.

The spelling of 149819868 in words is "one hundred forty-nine million, eight hundred nineteen thousand, eight hundred sixty-eight".