1816001146 has 4 divisors (see below), whose sum is σ = 2724001722. Its totient is φ = 908000572.

The previous prime is 1816001113. The next prime is 1816001147. The reversal of 1816001146 is 6411006181.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1305738225 + 510262921 = 36135^2 + 22589^2 .

It is not an unprimeable number, because it can be changed into a prime (1816001147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454000285 + ... + 454000288.

Almost surely, 2^1816001146 is an apocalyptic number.

1816001146 is a deficient number, since it is larger than the sum of its proper divisors (908000576).

1816001146 is an equidigital number, since it uses as much as digits as its factorization.

1816001146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908000575.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 1816001146 is about 42614.5649514342. The cubic root of 1816001146 is about 1220.0342967157.

The spelling of 1816001146 in words is "one billion, eight hundred sixteen million, one thousand, one hundred forty-six".