1801379826 has 24 divisors (see below), whose sum is σ = 4072685760. Its totient is φ = 574352856.

The previous prime is 1801379809. The next prime is 1801379831. The reversal of 1801379826 is 6289731081.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2175166 + ... + 2175993.

It is an arithmetic number, because the mean of its divisors is an integer number (169695240).

Almost surely, 2^1801379826 is an apocalyptic number.

1801379826 is an abundant number, since it is smaller than the sum of its proper divisors (2271305934).

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

1801379826 is a wasteful number, since it uses less digits than its factorization.

1801379826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4351190 (or 4351187 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 1801379826 is about 42442.6651613680. The cubic root of 1801379826 is about 1216.7511486300.

The spelling of 1801379826 in words is "one billion, eight hundred one million, three hundred seventy-nine thousand, eight hundred twenty-six".