1979380395 has 40 divisors (see below), whose sum is σ = 3551795280. Its totient is φ = 1054607040.

The previous prime is 1979380307. The next prime is 1979380457. The reversal of 1979380395 is 5930839791.

1979380395 is a `hidden beast` number, since 1 + 97 + 93 + 80 + 395 = 666.

It is not a de Polignac number, because 1979380395 - 2¹¹ = 1979378347 is a prime.

It is a super-2 number, since 2×1979380395² = 7835893496220712050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 557536 + ... + 561074.

It is an arithmetic number, because the mean of its divisors is an integer number (88794882).

Almost surely, 2^1979380395 is an apocalyptic number.

1979380395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1979380395 is a deficient number, since it is larger than the sum of its proper divisors (1572414885).

1979380395 is a wasteful number, since it uses less digits than its factorization.

1979380395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4937 (or 4928 counting only the distinct ones).

The product of its (nonzero) digits is 1837080, while the sum is 54.

The square root of 1979380395 is about 44490.2280843783. The cubic root of 1979380395 is about 1255.5762383958.

The spelling of 1979380395 in words is "one billion, nine hundred seventy-nine million, three hundred eighty thousand, three hundred ninety-five".