149609780 has 24 divisors (see below), whose sum is σ = 318608640. Its totient is φ = 59000480.

The previous prime is 149609773. The next prime is 149609797. The reversal of 149609780 is 87906941.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51260 + ... + 54099.

It is an arithmetic number, because the mean of its divisors is an integer number (13275360).

Almost surely, 2^149609780 is an apocalyptic number.

149609780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149609780 is an abundant number, since it is smaller than the sum of its proper divisors (168998860).

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

149609780 is a wasteful number, since it uses less digits than its factorization.

149609780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105439 (or 105437 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 149609780 is about 12231.5076748535. The cubic root of 149609780 is about 530.8681393342.

The spelling of 149609780 in words is "one hundred forty-nine million, six hundred nine thousand, seven hundred eighty".