1822196787 has 8 divisors (see below), whose sum is σ = 2431657680. Its totient is φ = 1213766880.

The previous prime is 1822196737. The next prime is 1822196797. The reversal of 1822196787 is 7876912281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1822196787 - 2⁷ = 1822196659 is a prime.

It is a super-2 number, since 2×1822196787² = 6640802261106246738, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1822196707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253612 + ... + 260697.

It is an arithmetic number, because the mean of its divisors is an integer number (303957210).

Almost surely, 2^1822196787 is an apocalyptic number.

1822196787 is a deficient number, since it is larger than the sum of its proper divisors (609460893).

1822196787 is a wasteful number, since it uses less digits than its factorization.

1822196787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515493.

The product of its digits is 677376, while the sum is 51.

The square root of 1822196787 is about 42687.1969916039. The cubic root of 1822196787 is about 1221.4201832408.

The spelling of 1822196787 in words is "one billion, eight hundred twenty-two million, one hundred ninety-six thousand, seven hundred eighty-seven".