981534963 has 4 divisors (see below), whose sum is σ = 1308713288. Its totient is φ = 654356640.

The previous prime is 981534943. The next prime is 981534979. The reversal of 981534963 is 369435189.

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

It is not a de Polignac number, because 981534963 - 2⁹ = 981534451 is a prime.

It is a super-2 number, since 2×981534963² = 1926821767182822738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981534943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163589158 + ... + 163589163.

It is an arithmetic number, because the mean of its divisors is an integer number (327178322).

Almost surely, 2^981534963 is an apocalyptic number.

981534963 is a deficient number, since it is larger than the sum of its proper divisors (327178325).

981534963 is a wasteful number, since it uses less digits than its factorization.

981534963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327178324.

The product of its digits is 699840, while the sum is 48.

The square root of 981534963 is about 31329.4583898286. The cubic root of 981534963 is about 993.8067100108.

The spelling of 981534963 in words is "nine hundred eighty-one million, five hundred thirty-four thousand, nine hundred sixty-three".