1813377804 has 48 divisors (see below), whose sum is σ = 4838668800. Its totient is φ = 517787136.

The previous prime is 1813377793. The next prime is 1813377809. The reversal of 1813377804 is 4087733181.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1813377809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152092 + ... + 163580.

It is an arithmetic number, because the mean of its divisors is an integer number (100805600).

Almost surely, 2^1813377804 is an apocalyptic number.

1813377804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1813377804 is an abundant number, since it is smaller than the sum of its proper divisors (3025290996).

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

1813377804 is a wasteful number, since it uses less digits than its factorization.

1813377804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13382 (or 13380 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 1813377804 is about 42583.7739520583. The cubic root of 1813377804 is about 1219.4465383497.

It can be divided in two parts, 1813377 and 804, that added together give a palindrome (1814181).

The spelling of 1813377804 in words is "one billion, eight hundred thirteen million, three hundred seventy-seven thousand, eight hundred four".