981689476 has 24 divisors (see below), whose sum is σ = 1780906176. Its totient is φ = 473107680.

The previous prime is 981689453. The next prime is 981689477. The reversal of 981689476 is 674986189.

It is a self number, because there is not a number n which added to its sum of digits gives 981689476.

It is not an unprimeable number, because it can be changed into a prime (981689477) 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, 15160 + ... + 46831.

It is an arithmetic number, because the mean of its divisors is an integer number (74204424).

Almost surely, 2^981689476 is an apocalyptic number.

It is an amenable number.

981689476 is a deficient number, since it is larger than the sum of its proper divisors (799216700).

981689476 is a wasteful number, since it uses less digits than its factorization.

981689476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62139 (or 62137 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 58.

The square root of 981689476 is about 31331.9242307267. The cubic root of 981689476 is about 993.8588555465.

The spelling of 981689476 in words is "nine hundred eighty-one million, six hundred eighty-nine thousand, four hundred seventy-six".