1999670059 has 2 divisors, whose sum is σ = 1999670060. Its totient is φ = 1999670058.

The previous prime is 1999670051. The next prime is 1999670087. The reversal of 1999670059 is 9500769991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1999670059 - 2³ = 1999670051 is a prime.

It is a super-2 number, since 2×1999670059² = 7997360689722126962, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1999669991 and 1999670009.

It is not a weakly prime, because it can be changed into another prime (1999670051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999835029 + 999835030.

It is an arithmetic number, because the mean of its divisors is an integer number (999835030).

Almost surely, 2^1999670059 is an apocalyptic number.

1999670059 is a deficient number, since it is larger than the sum of its proper divisors (1).

1999670059 is an equidigital number, since it uses as much as digits as its factorization.

1999670059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1377810, while the sum is 55.

The square root of 1999670059 is about 44717.6705453225. The cubic root of 1999670059 is about 1259.8517628161.

The spelling of 1999670059 in words is "one billion, nine hundred ninety-nine million, six hundred seventy thousand, fifty-nine".