187649012 has 12 divisors (see below), whose sum is σ = 329821380. Its totient is φ = 93414336.

The previous prime is 187648999. The next prime is 187649017. The reversal of 187649012 is 210946781.

It can be written as a sum of positive squares in 2 ways, for example, as 96904336 + 90744676 = 9844^2 + 9526^2 .

It is a super-2 number, since 2×187649012² = 70424303409152288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187649017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101513 + ... + 103344.

It is an arithmetic number, because the mean of its divisors is an integer number (27485115).

Almost surely, 2^187649012 is an apocalyptic number.

It is an amenable number.

187649012 is a deficient number, since it is larger than the sum of its proper divisors (142172368).

187649012 is a wasteful number, since it uses less digits than its factorization.

187649012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205090 (or 205088 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 187649012 is about 13698.5040059125. The cubic root of 187649012 is about 572.5087043800.

The spelling of 187649012 in words is "one hundred eighty-seven million, six hundred forty-nine thousand, twelve".