981235974 has 8 divisors (see below), whose sum is σ = 1962471960. Its totient is φ = 327078656.

The previous prime is 981235961. The next prime is 981235991. The reversal of 981235974 is 479532189.

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

981235974 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81769659 + ... + 81769670.

It is an arithmetic number, because the mean of its divisors is an integer number (245308995).

Almost surely, 2^981235974 is an apocalyptic number.

981235974 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

981235974 is a wasteful number, since it uses less digits than its factorization.

981235974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163539334.

The product of its digits is 544320, while the sum is 48.

The square root of 981235974 is about 31324.6863352213. The cubic root of 981235974 is about 993.7057907155.

The spelling of 981235974 in words is "nine hundred eighty-one million, two hundred thirty-five thousand, nine hundred seventy-four".