1822919081 has 8 divisors (see below), whose sum is σ = 1910809824. Its totient is φ = 1737096480.

The previous prime is 1822919057. The next prime is 1822919101. The reversal of 1822919081 is 1809192281.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1822919081 - 2¹⁸ = 1822656937 is a prime.

It is a super-2 number, since 2×1822919081² = 6646067951747769122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1822919041) 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, 515231 + ... + 518756.

It is an arithmetic number, because the mean of its divisors is an integer number (238851228).

Almost surely, 2^1822919081 is an apocalyptic number.

It is an amenable number.

1822919081 is a deficient number, since it is larger than the sum of its proper divisors (87890743).

1822919081 is a wasteful number, since it uses less digits than its factorization.

1822919081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034071.

The product of its (nonzero) digits is 20736, while the sum is 41.

The square root of 1822919081 is about 42695.6564652659. The cubic root of 1822919081 is about 1221.5815466995.

The spelling of 1822919081 in words is "one billion, eight hundred twenty-two million, nine hundred nineteen thousand, eighty-one".