7126489490 has 8 divisors (see below), whose sum is σ = 12827681100. Its totient is φ = 2850595792.

The previous prime is 7126489483. The next prime is 7126489507. The reversal of 7126489490 is 949846217.

It can be written as a sum of positive squares in 2 ways, for example, as 6152362969 + 974126521 = 78437^2 + 31211^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356324465 + ... + 356324484.

Almost surely, 2^7126489490 is an apocalyptic number.

7126489490 is a deficient number, since it is larger than the sum of its proper divisors (5701191610).

7126489490 is a wasteful number, since it uses less digits than its factorization.

7126489490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712648956.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 7126489490 is about 84418.5375969046. The cubic root of 7126489490 is about 1924.3846452770.

The spelling of 7126489490 in words is "seven billion, one hundred twenty-six million, four hundred eighty-nine thousand, four hundred ninety".