1246381049 has 4 divisors (see below), whose sum is σ = 1263454836. Its totient is φ = 1229307264.

The previous prime is 1246381013. The next prime is 1246381051. The reversal of 1246381049 is 9401836421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9401836421 = 68531 ⋅137191.

It can be written as a sum of positive squares in 2 ways, for example, as 1089330025 + 157051024 = 33005^2 + 12532^2 .

It is a cyclic number.

It is not a de Polignac number, because 1246381049 - 2²⁴ = 1229603833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1246381249) 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, 8536784 + ... + 8536929.

It is an arithmetic number, because the mean of its divisors is an integer number (315863709).

Almost surely, 2^1246381049 is an apocalyptic number.

It is an amenable number.

1246381049 is a deficient number, since it is larger than the sum of its proper divisors (17073787).

1246381049 is an equidigital number, since it uses as much as digits as its factorization.

1246381049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17073786.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 1246381049 is about 35304.1222663870. The cubic root of 1246381049 is about 1076.1767676792.

The spelling of 1246381049 in words is "one billion, two hundred forty-six million, three hundred eighty-one thousand, forty-nine".