1801291412 has 12 divisors (see below), whose sum is σ = 3164527380. Its totient is φ = 897140736.

The previous prime is 1801291411. The next prime is 1801291421. The reversal of 1801291412 is 2141921081.

It can be written as a sum of positive squares in 2 ways, for example, as 920151556 + 881139856 = 30334^2 + 29684^2 .

It is a super-3 number, since 3×1801291412³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1801291411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 875087 + ... + 877142.

It is an arithmetic number, because the mean of its divisors is an integer number (263710615).

Almost surely, 2^1801291412 is an apocalyptic number.

It is an amenable number.

1801291412 is a deficient number, since it is larger than the sum of its proper divisors (1363235968).

1801291412 is a wasteful number, since it uses less digits than its factorization.

1801291412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1752490 (or 1752488 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 1801291412 is about 42441.6235787464. The cubic root of 1801291412 is about 1216.7312417426.

The spelling of 1801291412 in words is "one billion, eight hundred one million, two hundred ninety-one thousand, four hundred twelve".