981487250 has 16 divisors (see below), whose sum is σ = 1837344600. Its totient is φ = 392594800.

The previous prime is 981487219. The next prime is 981487253. The reversal of 981487250 is 52784189.

It can be written as a sum of positive squares in 4 ways, for example, as 513067801 + 468419449 = 22651^2 + 21643^2 .

It is not an unprimeable number, because it can be changed into a prime (981487253) 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, 1962725 + ... + 1963224.

Almost surely, 2^981487250 is an apocalyptic number.

981487250 is a deficient number, since it is larger than the sum of its proper divisors (855857350).

981487250 is a wasteful number, since it uses less digits than its factorization.

981487250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3925966 (or 3925956 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 981487250 is about 31328.6969087449. The cubic root of 981487250 is about 993.7906065709.

The spelling of 981487250 in words is "nine hundred eighty-one million, four hundred eighty-seven thousand, two hundred fifty".