981745972 has 12 divisors (see below), whose sum is σ = 1734112800. Its totient is φ = 486285176.

The previous prime is 981745967. The next prime is 981745987. The reversal of 981745972 is 279547189.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1146472 + ... + 1147327.

It is an arithmetic number, because the mean of its divisors is an integer number (144509400).

Almost surely, 2^981745972 is an apocalyptic number.

It is an amenable number.

981745972 is a deficient number, since it is larger than the sum of its proper divisors (752366828).

981745972 is a wasteful number, since it uses less digits than its factorization.

981745972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2293910 (or 2293908 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 52.

The square root of 981745972 is about 31332.8257902156. The cubic root of 981745972 is about 993.8779206291.

The spelling of 981745972 in words is "nine hundred eighty-one million, seven hundred forty-five thousand, nine hundred seventy-two".