1975180249 has 15 divisors (see below), whose sum is σ = 2306783157. Its totient is φ = 1691145036.

The previous prime is 1975180247. The next prime is 1975180279. The reversal of 1975180249 is 9420815791.

The square root of 1975180249 is 44443.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1975180249 - 2¹ = 1975180247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1975180199 and 1975180208.

It is not an unprimeable number, because it can be changed into a prime (1975180247) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 2177254 + ... + 2178160.

Almost surely, 2^1975180249 is an apocalyptic number.

1975180249 is the 44443-rd square number.

1975180249 is the 22222-nd centered octagonal number.

It is an amenable number.

1975180249 is a deficient number, since it is larger than the sum of its proper divisors (331602908).

1975180249 is an frugal number, since it uses more digits than its factorization.

1975180249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842 (or 914 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 46.

The cubic root of 1975180249 is about 1254.6875195422.

It can be divided in two parts, 19751 and 80249, that added together give a 5-th power (100000 = 10⁵).

The spelling of 1975180249 in words is "one billion, nine hundred seventy-five million, one hundred eighty thousand, two hundred forty-nine".