1819145604 has 12 divisors (see below), whose sum is σ = 4244673104. Its totient is φ = 606381864.

The previous prime is 1819145579. The next prime is 1819145621. The reversal of 1819145604 is 4065419181.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75797722 + ... + 75797745.

Almost surely, 2^1819145604 is an apocalyptic number.

It is an amenable number.

1819145604 is an abundant number, since it is smaller than the sum of its proper divisors (2425527500).

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

1819145604 is a wasteful number, since it uses less digits than its factorization.

1819145604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151595474 (or 151595472 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 1819145604 is about 42651.4431643292. The cubic root of 1819145604 is about 1220.7380654500.

The spelling of 1819145604 in words is "one billion, eight hundred nineteen million, one hundred forty-five thousand, six hundred four".