981481487 has 8 divisors (see below), whose sum is σ = 1122038400. Its totient is φ = 841010904.

The previous prime is 981481477. The next prime is 981481559. The reversal of 981481487 is 784184189.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 981481487 - 2¹⁶ = 981415951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981481477) 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, 4964 + ... + 44582.

It is an arithmetic number, because the mean of its divisors is an integer number (140254800).

Almost surely, 2^981481487 is an apocalyptic number.

981481487 is a deficient number, since it is larger than the sum of its proper divisors (140556913).

981481487 is a wasteful number, since it uses less digits than its factorization.

981481487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43165.

The product of its digits is 516096, while the sum is 50.

The square root of 981481487 is about 31328.6049322341. The cubic root of 981481487 is about 993.7886614865.

The spelling of 981481487 in words is "nine hundred eighty-one million, four hundred eighty-one thousand, four hundred eighty-seven".