1670112421 has 2 divisors, whose sum is σ = 1670112422. Its totient is φ = 1670112420.

The previous prime is 1670112413. The next prime is 1670112427. The reversal of 1670112421 is 1242110761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1446280900 + 223831521 = 38030^2 + 14961^2 .

It is a cyclic number.

It is not a de Polignac number, because 1670112421 - 2³ = 1670112413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1670112427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835056210 + 835056211.

It is an arithmetic number, because the mean of its divisors is an integer number (835056211).

Almost surely, 2^1670112421 is an apocalyptic number.

It is an amenable number.

1670112421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1670112421 is an equidigital number, since it uses as much as digits as its factorization.

1670112421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 1670112421 is about 40867.0089558803. The cubic root of 1670112421 is about 1186.4476177532.

The spelling of 1670112421 in words is "one billion, six hundred seventy million, one hundred twelve thousand, four hundred twenty-one".