1819713838 has 8 divisors (see below), whose sum is σ = 2746957032. Its totient is φ = 904061496.

The previous prime is 1819713827. The next prime is 1819713853. The reversal of 1819713838 is 8383179181.

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

It is a super-2 number, since 2×1819713838² = 6622716904417380488, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1819713791 and 1819713800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2897320 + ... + 2897947.

It is an arithmetic number, because the mean of its divisors is an integer number (343369629).

Almost surely, 2^1819713838 is an apocalyptic number.

1819713838 is a deficient number, since it is larger than the sum of its proper divisors (927243194).

1819713838 is a wasteful number, since it uses less digits than its factorization.

1819713838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5795426.

The product of its digits is 290304, while the sum is 49.

The square root of 1819713838 is about 42658.1040131884. The cubic root of 1819713838 is about 1220.8651567357.

The spelling of 1819713838 in words is "one billion, eight hundred nineteen million, seven hundred thirteen thousand, eight hundred thirty-eight".