1801562142 has 64 divisors (see below), whose sum is σ = 3745437696. Its totient is φ = 577342080.

The previous prime is 1801562141. The next prime is 1801562143. The reversal of 1801562142 is 2412651081.

It is an interprime number because it is at equal distance from previous prime (1801562141) and next prime (1801562143).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1801562141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8078643 + ... + 8078865.

It is an arithmetic number, because the mean of its divisors is an integer number (58522464).

Almost surely, 2^1801562142 is an apocalyptic number.

1801562142 is an abundant number, since it is smaller than the sum of its proper divisors (1943875554).

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

1801562142 is a wasteful number, since it uses less digits than its factorization.

1801562142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 1801562142 is about 42444.8128986334. The cubic root of 1801562142 is about 1216.7921960012.

The spelling of 1801562142 in words is "one billion, eight hundred one million, five hundred sixty-two thousand, one hundred forty-two".