940781644 has 24 divisors (see below), whose sum is σ = 1797113808. Its totient is φ = 427371840.

The previous prime is 940781629. The next prime is 940781701. The reversal of 940781644 is 446187049.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 940781644.

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 7 ways as a sum of consecutive naturals, for example, 81394 + ... + 92230.

It is an arithmetic number, because the mean of its divisors is an integer number (74879742).

Almost surely, 2^940781644 is an apocalyptic number.

It is an amenable number.

940781644 is a deficient number, since it is larger than the sum of its proper divisors (856332164).

940781644 is a wasteful number, since it uses less digits than its factorization.

940781644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12825 (or 12823 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 940781644 is about 30672.1639927802. The cubic root of 940781644 is about 979.8575539177.

The spelling of 940781644 in words is "nine hundred forty million, seven hundred eighty-one thousand, six hundred forty-four".