1979922468 has 12 divisors (see below), whose sum is σ = 4619819120. Its totient is φ = 659974152.

The previous prime is 1979922463. The next prime is 1979922473. The reversal of 1979922468 is 8642299791.

It is an interprime number because it is at equal distance from previous prime (1979922463) and next prime (1979922473).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1979922468² = 7840185958582422048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1979922463) 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, 82496758 + ... + 82496781.

Almost surely, 2^1979922468 is an apocalyptic number.

It is an amenable number.

1979922468 is an abundant number, since it is smaller than the sum of its proper divisors (2639896652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1979922468 is a wasteful number, since it uses less digits than its factorization.

1979922468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164993546 (or 164993544 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 57.

The square root of 1979922468 is about 44496.3197129830. The cubic root of 1979922468 is about 1255.6908452796.

The spelling of 1979922468 in words is "one billion, nine hundred seventy-nine million, nine hundred twenty-two thousand, four hundred sixty-eight".