981025490 has 32 divisors (see below), whose sum is σ = 1790457264. Its totient is φ = 386979840.

The previous prime is 981025489. The next prime is 981025523. The reversal of 981025490 is 94520189.

981025490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 283484569 + 697540921 = 16837^2 + 26411^2 .

It is a super-2 number, since 2×981025490² = 1924822024059480200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212810 + ... + 217370.

Almost surely, 2^981025490 is an apocalyptic number.

981025490 is a deficient number, since it is larger than the sum of its proper divisors (809431774).

981025490 is a wasteful number, since it uses less digits than its factorization.

981025490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4862.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 981025490 is about 31321.3264406219. The cubic root of 981025490 is about 993.6347326716.

The spelling of 981025490 in words is "nine hundred eighty-one million, twenty-five thousand, four hundred ninety".