1243957346 has 16 divisors (see below), whose sum is σ = 1974492288. Its totient is φ = 586555200.

The previous prime is 1243957333. The next prime is 1243957373. The reversal of 1243957346 is 6437593421.

It is a junction number, because it is equal to n+sod(n) for n = 1243957297 and 1243957306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187175 + ... + 193706.

It is an arithmetic number, because the mean of its divisors is an integer number (123405768).

Almost surely, 2^1243957346 is an apocalyptic number.

1243957346 is a deficient number, since it is larger than the sum of its proper divisors (730534942).

1243957346 is a wasteful number, since it uses less digits than its factorization.

1243957346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380977.

The product of its digits is 544320, while the sum is 44.

The square root of 1243957346 is about 35269.7795003031. The cubic root of 1243957346 is about 1075.4787400025.

The spelling of 1243957346 in words is "one billion, two hundred forty-three million, nine hundred fifty-seven thousand, three hundred forty-six".