1819673950 has 12 divisors (see below), whose sum is σ = 3384593640. Its totient is φ = 727869560.

The previous prime is 1819673941. The next prime is 1819673953. The reversal of 1819673950 is 593769181.

It is a super-2 number, since 2×1819673950² = 6622426568617205000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1819673894 and 1819673903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1819673953) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18196690 + ... + 18196789.

It is an arithmetic number, because the mean of its divisors is an integer number (282049470).

Almost surely, 2^1819673950 is an apocalyptic number.

1819673950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1819673950 is a deficient number, since it is larger than the sum of its proper divisors (1564919690).

1819673950 is a wasteful number, since it uses less digits than its factorization.

1819673950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36393491 (or 36393486 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 49.

The square root of 1819673950 is about 42657.6364792988. The cubic root of 1819673950 is about 1220.8562362443.

The spelling of 1819673950 in words is "one billion, eight hundred nineteen million, six hundred seventy-three thousand, nine hundred fifty".