1979851941 has 12 divisors (see below), whose sum is σ = 2913745068. Its totient is φ = 1294997184.

The previous prime is 1979851933. The next prime is 1979851949. The reversal of 1979851941 is 1491589791.

1979851941 is a `hidden beast` number, since 19 + 79 + 8 + 519 + 41 = 666.

It is an interprime number because it is at equal distance from previous prime (1979851933) and next prime (1979851949).

It can be written as a sum of positive squares in 2 ways, for example, as 1746404100 + 233447841 = 41790^2 + 15279^2 .

It is not a de Polignac number, because 1979851941 - 2³ = 1979851933 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1979851949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2074840 + ... + 2075793.

It is an arithmetic number, because the mean of its divisors is an integer number (242812089).

Almost surely, 2^1979851941 is an apocalyptic number.

It is an amenable number.

1979851941 is a deficient number, since it is larger than the sum of its proper divisors (933893127).

1979851941 is a wasteful number, since it uses less digits than its factorization.

1979851941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4150692 (or 4150689 counting only the distinct ones).

The product of its digits is 816480, while the sum is 54.

The square root of 1979851941 is about 44495.5272021807. The cubic root of 1979851941 is about 1255.6759354096.

The spelling of 1979851941 in words is "one billion, nine hundred seventy-nine million, eight hundred fifty-one thousand, nine hundred forty-one".