787891941 has 20 divisors (see below), whose sum is σ = 1181928000. Its totient is φ = 523050696.

The previous prime is 787891919. The next prime is 787891961. The reversal of 787891941 is 149198787.

It is not a de Polignac number, because 787891941 - 2¹³ = 787883749 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (787891961) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 991 + ... + 39708.

It is an arithmetic number, because the mean of its divisors is an integer number (59096400).

Almost surely, 2^787891941 is an apocalyptic number.

It is an amenable number.

787891941 is a deficient number, since it is larger than the sum of its proper divisors (394036059).

787891941 is a wasteful number, since it uses less digits than its factorization.

787891941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40950 (or 40941 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 54.

The square root of 787891941 is about 28069.4129080036. The cubic root of 787891941 is about 923.6105522725.

The spelling of 787891941 in words is "seven hundred eighty-seven million, eight hundred ninety-one thousand, nine hundred forty-one".