1382745261 has 4 divisors (see below), whose sum is σ = 1843660352. Its totient is φ = 921830172.

The previous prime is 1382745253. The next prime is 1382745277. The reversal of 1382745261 is 1625472831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1625472831 = 3 ⋅541824277.

It is not a de Polignac number, because 1382745261 - 2³ = 1382745253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1382745061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230457541 + ... + 230457546.

It is an arithmetic number, because the mean of its divisors is an integer number (460915088).

Almost surely, 2^1382745261 is an apocalyptic number.

It is an amenable number.

1382745261 is a deficient number, since it is larger than the sum of its proper divisors (460915091).

1382745261 is an equidigital number, since it uses as much as digits as its factorization.

1382745261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460915090.

The product of its digits is 80640, while the sum is 39.

The square root of 1382745261 is about 37185.2828549145. The cubic root of 1382745261 is about 1114.0740530651.

The spelling of 1382745261 in words is "one billion, three hundred eighty-two million, seven hundred forty-five thousand, two hundred sixty-one".