1816356426 has 16 divisors (see below), whose sum is σ = 3636019584. Its totient is φ = 604901024.

The previous prime is 1816356419. The next prime is 1816356431. The reversal of 1816356426 is 6246536181.

It is a plaindrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130611 + ... + 143846.

It is an arithmetic number, because the mean of its divisors is an integer number (227251224).

Almost surely, 2^1816356426 is an apocalyptic number.

1816356426 is an abundant number, since it is smaller than the sum of its proper divisors (1819663158).

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

1816356426 is a wasteful number, since it uses less digits than its factorization.

1816356426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275565.

The product of its digits is 207360, while the sum is 42.

The square root of 1816356426 is about 42618.7332754037. The cubic root of 1816356426 is about 1220.1138534792.

The spelling of 1816356426 in words is "one billion, eight hundred sixteen million, three hundred fifty-six thousand, four hundred twenty-six".