1801622042 has 64 divisors (see below), whose sum is σ = 3130306560. Its totient is φ = 770112000.

The previous prime is 1801622033. The next prime is 1801622051. The reversal of 1801622042 is 2402261081.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1801622033) and next prime (1801622051).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4703783 + ... + 4704165.

It is an arithmetic number, because the mean of its divisors is an integer number (48911040).

Almost surely, 2^1801622042 is an apocalyptic number.

1801622042 is a deficient number, since it is larger than the sum of its proper divisors (1328684518).

1801622042 is a wasteful number, since it uses less digits than its factorization.

1801622042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 1801622042 is about 42445.5185149151. The cubic root of 1801622042 is about 1216.8056815282.

The spelling of 1801622042 in words is "one billion, eight hundred one million, six hundred twenty-two thousand, forty-two".