1201650549 has 8 divisors (see below), whose sum is σ = 1747855392. Its totient is φ = 728273040.

The previous prime is 1201650547. The next prime is 1201650557. The reversal of 1201650549 is 9450561021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1201650549 - 2¹ = 1201650547 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 36413653 = 1201650549 / (1 + 2 + 0 + 1 + 6 + 5 + 0 + 5 + 4 + 9).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201650547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18206794 + ... + 18206859.

It is an arithmetic number, because the mean of its divisors is an integer number (218481924).

Almost surely, 2^1201650549 is an apocalyptic number.

It is an amenable number.

1201650549 is a deficient number, since it is larger than the sum of its proper divisors (546204843).

1201650549 is a wasteful number, since it uses less digits than its factorization.

1201650549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36413667.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 1201650549 is about 34664.8315876480. The cubic root of 1201650549 is about 1063.1455598721.

The spelling of 1201650549 in words is "one billion, two hundred one million, six hundred fifty thousand, five hundred forty-nine".