981980654 has 8 divisors (see below), whose sum is σ = 1483723008. Its totient is φ = 487406320.

The previous prime is 981980621. The next prime is 981980663. The reversal of 981980654 is 456089189.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1791662 + ... + 1792209.

It is an arithmetic number, because the mean of its divisors is an integer number (185465376).

Almost surely, 2^981980654 is an apocalyptic number.

981980654 is a deficient number, since it is larger than the sum of its proper divisors (501742354).

981980654 is a wasteful number, since it uses less digits than its factorization.

981980654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3584010.

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 981980654 is about 31336.5705526307. The cubic root of 981980654 is about 993.9571083490.

The spelling of 981980654 in words is "nine hundred eighty-one million, nine hundred eighty thousand, six hundred fifty-four".