2196863990 has 16 divisors (see below), whose sum is σ = 3957707952. Its totient is φ = 878000544.

The previous prime is 2196863987. The next prime is 2196864017. The reversal of 2196863990 is 993686912.

It is a super-2 number, since 2×2196863990² = 9652422781117440200, 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 7 ways as a sum of consecutive naturals, for example, 80669 + ... + 104408.

It is an arithmetic number, because the mean of its divisors is an integer number (247356747).

Almost surely, 2^2196863990 is an apocalyptic number.

2196863990 is a deficient number, since it is larger than the sum of its proper divisors (1760843962).

2196863990 is a wasteful number, since it uses less digits than its factorization.

2196863990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186271.

The product of its (nonzero) digits is 1259712, while the sum is 53.

The square root of 2196863990 is about 46870.7156975440. The cubic root of 2196863990 is about 1299.9731730164.

It can be divided in two parts, 21968 and 63990, that added together give a palindrome (85958).

The spelling of 2196863990 in words is "two billion, one hundred ninety-six million, eight hundred sixty-three thousand, nine hundred ninety".