7581980954 has 4 divisors (see below), whose sum is σ = 11372971434. Its totient is φ = 3790990476.

The previous prime is 7581980953. The next prime is 7581980963. The reversal of 7581980954 is 4590891857.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7220410729 + 361570225 = 84973^2 + 19015^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7581980954.

It is not an unprimeable number, because it can be changed into a prime (7581980953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1895495237 + ... + 1895495240.

Almost surely, 2^7581980954 is an apocalyptic number.

7581980954 is a deficient number, since it is larger than the sum of its proper divisors (3790990480).

7581980954 is a wasteful number, since it uses less digits than its factorization.

7581980954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3790990479.

The product of its (nonzero) digits is 3628800, while the sum is 56.

The square root of 7581980954 is about 87074.5712248989. The cubic root of 7581980954 is about 1964.5400926060.

The spelling of 7581980954 in words is "seven billion, five hundred eighty-one million, nine hundred eighty thousand, nine hundred fifty-four".