1040981978 has 32 divisors (see below), whose sum is σ = 1749600000. Its totient is φ = 461950720.

The previous prime is 1040981917. The next prime is 1040981983. The reversal of 1040981978 is 8791890401.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46148 + ... + 64896.

It is an arithmetic number, because the mean of its divisors is an integer number (54675000).

Almost surely, 2^1040981978 is an apocalyptic number.

1040981978 is a deficient number, since it is larger than the sum of its proper divisors (708618022).

1040981978 is a wasteful number, since it uses less digits than its factorization.

1040981978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18862.

The product of its (nonzero) digits is 145152, while the sum is 47.

The square root of 1040981978 is about 32264.2523235856. The cubic root of 1040981978 is about 1013.4781817938.

The spelling of 1040981978 in words is "one billion, forty million, nine hundred eighty-one thousand, nine hundred seventy-eight".