1819354396 has 12 divisors (see below), whose sum is σ = 3251612448. Its totient is φ = 890322272.

The previous prime is 1819354393. The next prime is 1819354421. The reversal of 1819354396 is 6934539181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1819354393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4838521 + ... + 4838896.

It is an arithmetic number, because the mean of its divisors is an integer number (270967704).

Almost surely, 2^1819354396 is an apocalyptic number.

It is an amenable number.

1819354396 is a deficient number, since it is larger than the sum of its proper divisors (1432258052).

1819354396 is a wasteful number, since it uses less digits than its factorization.

1819354396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9677468 (or 9677466 counting only the distinct ones).

The product of its digits is 699840, while the sum is 49.

The square root of 1819354396 is about 42653.8907486761. The cubic root of 1819354396 is about 1220.7847669695.

The spelling of 1819354396 in words is "one billion, eight hundred nineteen million, three hundred fifty-four thousand, three hundred ninety-six".