822149838 has 20 divisors (see below), whose sum is σ = 1842225000. Its totient is φ = 274049892.

The previous prime is 822149827. The next prime is 822149857. The reversal of 822149838 is 838941228.

It is a super-2 number, since 2×822149838² = 1351860712246852488, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 822149793 and 822149802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2537338 + ... + 2537661.

It is an arithmetic number, because the mean of its divisors is an integer number (92111250).

Almost surely, 2^822149838 is an apocalyptic number.

822149838 is an abundant number, since it is smaller than the sum of its proper divisors (1020075162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

822149838 is a wasteful number, since it uses less digits than its factorization.

822149838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5075013 (or 5075004 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 822149838 is about 28673.1553547914. The cubic root of 822149838 is about 936.8074270515.

The spelling of 822149838 in words is "eight hundred twenty-two million, one hundred forty-nine thousand, eight hundred thirty-eight".