1940656286 has 4 divisors (see below), whose sum is σ = 2910984432. Its totient is φ = 970328142.

The previous prime is 1940656279. The next prime is 1940656297. The reversal of 1940656286 is 6826560491.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1940656286² = 7532293640782627592, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1940656286.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485164070 + ... + 485164073.

It is an arithmetic number, because the mean of its divisors is an integer number (727746108).

Almost surely, 2^1940656286 is an apocalyptic number.

1940656286 is a deficient number, since it is larger than the sum of its proper divisors (970328146).

1940656286 is an equidigital number, since it uses as much as digits as its factorization.

1940656286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970328145.

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 1940656286 is about 44052.8805641583. The cubic root of 1940656286 is about 1247.3343270712.

The spelling of 1940656286 in words is "one billion, nine hundred forty million, six hundred fifty-six thousand, two hundred eighty-six".