1475133661 has 2 divisors, whose sum is σ = 1475133662. Its totient is φ = 1475133660.

The previous prime is 1475133637. The next prime is 1475133689. The reversal of 1475133661 is 1663315741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1317254436 + 157879225 = 36294^2 + 12565^2 .

It is a cyclic number.

It is not a de Polignac number, because 1475133661 - 2²⁹ = 938262749 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1475133661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1475133461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 737566830 + 737566831.

It is an arithmetic number, because the mean of its divisors is an integer number (737566831).

Almost surely, 2^1475133661 is an apocalyptic number.

It is an amenable number.

1475133661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1475133661 is an equidigital number, since it uses as much as digits as its factorization.

1475133661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 37.

The square root of 1475133661 is about 38407.4688179265. The cubic root of 1475133661 is about 1138.3534403667.

The spelling of 1475133661 in words is "one billion, four hundred seventy-five million, one hundred thirty-three thousand, six hundred sixty-one".