1261332082 has 4 divisors (see below), whose sum is σ = 1891998126. Its totient is φ = 630666040.

The previous prime is 1261332073. The next prime is 1261332173. The reversal of 1261332082 is 2802331621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2802331621 = 22739 ⋅123239.

It can be written as a sum of positive squares in only one way, i.e., 1237702761 + 23629321 = 35181^2 + 4861^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1261332082.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315333019 + ... + 315333022.

Almost surely, 2^1261332082 is an apocalyptic number.

1261332082 is a deficient number, since it is larger than the sum of its proper divisors (630666044).

1261332082 is an equidigital number, since it uses as much as digits as its factorization.

1261332082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630666043.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1261332082 is about 35515.2373214653. The cubic root of 1261332082 is about 1080.4627880604.

The spelling of 1261332082 in words is "one billion, two hundred sixty-one million, three hundred thirty-two thousand, eighty-two".