149865860 has 12 divisors (see below), whose sum is σ = 314718348. Its totient is φ = 59946336.

The previous prime is 149865857. The next prime is 149865869. The reversal of 149865860 is 68568941.

It can be written as a sum of positive squares in 2 ways, for example, as 48219136 + 101646724 = 6944^2 + 10082^2 .

It is not an unprimeable number, because it can be changed into a prime (149865869) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3746627 + ... + 3746666.

It is an arithmetic number, because the mean of its divisors is an integer number (26226529).

Almost surely, 2^149865860 is an apocalyptic number.

149865860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149865860 is an abundant number, since it is smaller than the sum of its proper divisors (164852488).

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

149865860 is a wasteful number, since it uses less digits than its factorization.

149865860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7493302 (or 7493300 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 149865860 is about 12241.9712464946. The cubic root of 149865860 is about 531.1708539994.

The spelling of 149865860 in words is "one hundred forty-nine million, eight hundred sixty-five thousand, eight hundred sixty".