1632979 has 2 divisors, whose sum is σ = 1632980. Its totient is φ = 1632978.

The previous prime is 1632949. The next prime is 1632997. The reversal of 1632979 is 9792361.

Together with next prime (1632997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (9792361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1632979 - 2⁹ = 1632467 is a prime.

It is not a weakly prime, because it can be changed into another prime (1632919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 816489 + 816490.

It is an arithmetic number, because the mean of its divisors is an integer number (816490).

2^1632979 is an apocalyptic number.

1632979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1632979 is an equidigital number, since it uses as much as digits as its factorization.

1632979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 37.

The square root of 1632979 is about 1277.8806673551. The cubic root of 1632979 is about 117.7588438836.

It can be divided in two parts, 163297 and 9, that added together give a triangular number (163306 = T₅₇₁).

The spelling of 1632979 in words is "one million, six hundred thirty-two thousand, nine hundred seventy-nine".