1223161457 has 8 divisors (see below), whose sum is σ = 1407157632. Its totient is φ = 1041480000.

The previous prime is 1223161421. The next prime is 1223161477. The reversal of 1223161457 is 7541613221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1223161457 - 2⁶ = 1223161393 is a prime.

It is a super-2 number, since 2×1223161457² = 2992247899780725698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223161477) 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, 577544 + ... + 579657.

It is an arithmetic number, because the mean of its divisors is an integer number (175894704).

Almost surely, 2^1223161457 is an apocalyptic number.

It is an amenable number.

1223161457 is a deficient number, since it is larger than the sum of its proper divisors (183996175).

1223161457 is a wasteful number, since it uses less digits than its factorization.

1223161457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157359.

The product of its digits is 10080, while the sum is 32.

The square root of 1223161457 is about 34973.7252376695. The cubic root of 1223161457 is about 1069.4519151280.

Adding to 1223161457 its reverse (7541613221), we get a palindrome (8764774678).

The spelling of 1223161457 in words is "one billion, two hundred twenty-three million, one hundred sixty-one thousand, four hundred fifty-seven".