1612571993 has 2 divisors, whose sum is σ = 1612571994. Its totient is φ = 1612571992.

The previous prime is 1612571977. The next prime is 1612572001. The reversal of 1612571993 is 3991752161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1462068169 + 150503824 = 38237^2 + 12268^2 .

It is a cyclic number.

It is not a de Polignac number, because 1612571993 - 2⁴ = 1612571977 is a prime.

It is not a weakly prime, because it can be changed into another prime (1612571903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806285996 + 806285997.

It is an arithmetic number, because the mean of its divisors is an integer number (806285997).

Almost surely, 2^1612571993 is an apocalyptic number.

It is an amenable number.

1612571993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1612571993 is an equidigital number, since it uses as much as digits as its factorization.

1612571993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 44.

The square root of 1612571993 is about 40156.8424181982. The cubic root of 1612571993 is about 1172.6625008035.

The spelling of 1612571993 in words is "one billion, six hundred twelve million, five hundred seventy-one thousand, nine hundred ninety-three".