1872981941 has 4 divisors (see below), whose sum is σ = 1873120800. Its totient is φ = 1872843084.

The previous prime is 1872981911. The next prime is 1872981959. The reversal of 1872981941 is 1491892781.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1491892781 = 4057 ⋅367733.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1872981941 is a prime.

It is a super-2 number, since 2×1872981941² = 7016122702624254962, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1872981941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1872981911) 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, 46721 + ... + 76998.

It is an arithmetic number, because the mean of its divisors is an integer number (468280200).

Almost surely, 2^1872981941 is an apocalyptic number.

It is an amenable number.

1872981941 is a deficient number, since it is larger than the sum of its proper divisors (138859).

1872981941 is a wasteful number, since it uses less digits than its factorization.

1872981941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138858.

The product of its digits is 290304, while the sum is 50.

The square root of 1872981941 is about 43277.9613775880. The cubic root of 1872981941 is about 1232.6634817781.

The spelling of 1872981941 in words is "one billion, eight hundred seventy-two million, nine hundred eighty-one thousand, nine hundred forty-one".