1420186979 has 2 divisors, whose sum is σ = 1420186980. Its totient is φ = 1420186978.

The previous prime is 1420186961. The next prime is 1420187011. The reversal of 1420186979 is 9796810241.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1420186979 is a prime.

It is a super-2 number, since 2×1420186979² = 4033862110642292882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1420186379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710093489 + 710093490.

It is an arithmetic number, because the mean of its divisors is an integer number (710093490).

Almost surely, 2^1420186979 is an apocalyptic number.

1420186979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420186979 is an equidigital number, since it uses as much as digits as its factorization.

1420186979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 1420186979 is about 37685.3682348999. The cubic root of 1420186979 is about 1124.0401964133.

The spelling of 1420186979 in words is "one billion, four hundred twenty million, one hundred eighty-six thousand, nine hundred seventy-nine".