1881298001 has 4 divisors (see below), whose sum is σ = 2052325104. Its totient is φ = 1710270900.

The previous prime is 1881297983. The next prime is 1881298039. The reversal of 1881298001 is 1008921881.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1881298001 - 2⁶ = 1881297937 is a prime.

It is a super-3 number, since 3×1881298001³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1881298061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85513535 + ... + 85513556.

It is an arithmetic number, because the mean of its divisors is an integer number (513081276).

Almost surely, 2^1881298001 is an apocalyptic number.

1881298001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1881298001 is a deficient number, since it is larger than the sum of its proper divisors (171027103).

1881298001 is a wasteful number, since it uses less digits than its factorization.

1881298001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171027102.

The product of its (nonzero) digits is 9216, while the sum is 38.

The square root of 1881298001 is about 43373.9322750428. The cubic root of 1881298001 is about 1234.4851347598.

The spelling of 1881298001 in words is "one billion, eight hundred eighty-one million, two hundred ninety-eight thousand, one".