1941987 has 8 divisors (see below), whose sum is σ = 2600640. Its totient is φ = 1289000.

The previous prime is 1941983. The next prime is 1942001. The reversal of 1941987 is 7891491.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1941987 - 2² = 1941983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1941983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537 + ... + 2042.

It is an arithmetic number, because the mean of its divisors is an integer number (325080).

2^1941987 is an apocalyptic number.

1941987 is a deficient number, since it is larger than the sum of its proper divisors (658653).

1941987 is a wasteful number, since it uses less digits than its factorization.

1941987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2833.

The product of its digits is 18144, while the sum is 39.

The square root of 1941987 is about 1393.5519365994. The cubic root of 1941987 is about 124.7619362263.

The spelling of 1941987 in words is "one million, nine hundred forty-one thousand, nine hundred eighty-seven".