981105774 has 32 divisors (see below), whose sum is σ = 2253260160. Its totient is φ = 281656800.

The previous prime is 981105731. The next prime is 981105787. The reversal of 981105774 is 477501189.

It is a super-2 number, since 2×981105774² = 1925137079552278152, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 389937 + ... + 392444.

It is an arithmetic number, because the mean of its divisors is an integer number (70414380).

Almost surely, 2^981105774 is an apocalyptic number.

981105774 is an abundant number, since it is smaller than the sum of its proper divisors (1272154386).

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

981105774 is a wasteful number, since it uses less digits than its factorization.

981105774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782416.

The product of its (nonzero) digits is 70560, while the sum is 42.

The square root of 981105774 is about 31322.6080331763. The cubic root of 981105774 is about 993.6618372323.

The spelling of 981105774 in words is "nine hundred eighty-one million, one hundred five thousand, seven hundred seventy-four".