1243665046 has 16 divisors (see below), whose sum is σ = 2009680848. Its totient is φ = 573804000.

The previous prime is 1243665043. The next prime is 1243665077. The reversal of 1243665046 is 6405663421.

It is a junction number, because it is equal to n+sod(n) for n = 1243664996 and 1243665014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243665043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93916 + ... + 106336.

It is an arithmetic number, because the mean of its divisors is an integer number (125605053).

Almost surely, 2^1243665046 is an apocalyptic number.

1243665046 is a deficient number, since it is larger than the sum of its proper divisors (766015802).

1243665046 is a wasteful number, since it uses less digits than its factorization.

1243665046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16287.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 1243665046 is about 35265.6354827189. The cubic root of 1243665046 is about 1075.3944962079.

The spelling of 1243665046 in words is "one billion, two hundred forty-three million, six hundred sixty-five thousand, forty-six".