1229843057 has 4 divisors (see below), whose sum is σ = 1233194496. Its totient is φ = 1226491620.

The previous prime is 1229843033. The next prime is 1229843059. The reversal of 1229843057 is 7503489221.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1229843057 is a prime.

It is a super-2 number, since 2×1229843057² = 3025027889702210498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1229843059) 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, 1675169 + ... + 1675902.

It is an arithmetic number, because the mean of its divisors is an integer number (308298624).

Almost surely, 2^1229843057 is an apocalyptic number.

It is an amenable number.

1229843057 is a deficient number, since it is larger than the sum of its proper divisors (3351439).

1229843057 is an equidigital number, since it uses as much as digits as its factorization.

1229843057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3351438.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 1229843057 is about 35069.1182809035. The cubic root of 1229843057 is about 1071.3956972356.

It can be divided in two parts, 12298 and 43057, that added together give a palindrome (55355).

The spelling of 1229843057 in words is "one billion, two hundred twenty-nine million, eight hundred forty-three thousand, fifty-seven".