1801949574 has 32 divisors (see below), whose sum is σ = 3634767360. Its totient is φ = 595517472.

The previous prime is 1801949573. The next prime is 1801949647. The reversal of 1801949574 is 4759491081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1801949573) 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, 1211059 + ... + 1212545.

It is an arithmetic number, because the mean of its divisors is an integer number (113586480).

Almost surely, 2^1801949574 is an apocalyptic number.

1801949574 is an abundant number, since it is smaller than the sum of its proper divisors (1832817786).

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

1801949574 is a wasteful number, since it uses less digits than its factorization.

1801949574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3084.

The product of its (nonzero) digits is 362880, while the sum is 48.

The square root of 1801949574 is about 42449.3766031964. The cubic root of 1801949574 is about 1216.8794148345.

The spelling of 1801949574 in words is "one billion, eight hundred one million, nine hundred forty-nine thousand, five hundred seventy-four".