149539680 has 144 divisors (see below), whose sum is σ = 515380320. Its totient is φ = 39481344.

The previous prime is 149539661. The next prime is 149539711. The reversal of 149539680 is 86935941.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162261 + ... + 163179.

It is an arithmetic number, because the mean of its divisors is an integer number (3579030).

Almost surely, 2^149539680 is an apocalyptic number.

149539680 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 149539680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257690160).

149539680 is an abundant number, since it is smaller than the sum of its proper divisors (365840640).

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

149539680 is a wasteful number, since it uses less digits than its factorization.

149539680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053 (or 1042 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 149539680 is about 12228.6417888497. The cubic root of 149539680 is about 530.7852132263.

The spelling of 149539680 in words is "one hundred forty-nine million, five hundred thirty-nine thousand, six hundred eighty".