1612201975 has 6 divisors (see below), whose sum is σ = 1999130480. Its totient is φ = 1289761560.

The previous prime is 1612201973. The next prime is 1612201979. The reversal of 1612201975 is 5791022161.

It is not a de Polignac number, because 1612201975 - 2¹ = 1612201973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1612201975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1612201973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32244015 + ... + 32244064.

Almost surely, 2^1612201975 is an apocalyptic number.

1612201975 is a deficient number, since it is larger than the sum of its proper divisors (386928505).

1612201975 is an equidigital number, since it uses as much as digits as its factorization.

1612201975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64488089 (or 64488084 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 1612201975 is about 40152.2349938332. The cubic root of 1612201975 is about 1172.5728015679.

The spelling of 1612201975 in words is "one billion, six hundred twelve million, two hundred one thousand, nine hundred seventy-five".