149981500 has 48 divisors (see below), whose sum is σ = 331793280. Its totient is φ = 59217600.

The previous prime is 149981479. The next prime is 149981501. The reversal of 149981500 is 5189941.

It is a self number, because there is not a number n which added to its sum of digits gives 149981500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149981501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37602 + ... + 41398.

It is an arithmetic number, because the mean of its divisors is an integer number (6912360).

Almost surely, 2^149981500 is an apocalyptic number.

149981500 is a gapful number since it is divisible by the number (10) 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 149981500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165896640).

149981500 is an abundant number, since it is smaller than the sum of its proper divisors (181811780).

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

149981500 is a wasteful number, since it uses less digits than its factorization.

149981500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3895 (or 3883 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 149981500 is about 12246.6934312899. The cubic root of 149981500 is about 531.3074401560.

The spelling of 149981500 in words is "one hundred forty-nine million, nine hundred eighty-one thousand, five hundred".