1245456283 has 4 divisors (see below), whose sum is σ = 1253815200. Its totient is φ = 1237097368.

The previous prime is 1245456269. The next prime is 1245456293. The reversal of 1245456283 is 3826545421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1245456283 is a prime.

It is a super-2 number, since 2×1245456283² = 3102322705728352178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1245456203) 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, 4179235 + ... + 4179532.

It is an arithmetic number, because the mean of its divisors is an integer number (313453800).

Almost surely, 2^1245456283 is an apocalyptic number.

1245456283 is a deficient number, since it is larger than the sum of its proper divisors (8358917).

1245456283 is an equidigital number, since it uses as much as digits as its factorization.

1245456283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8358916.

The product of its digits is 230400, while the sum is 40.

The square root of 1245456283 is about 35291.0226969976. The cubic root of 1245456283 is about 1075.9105414656.

The spelling of 1245456283 in words is "one billion, two hundred forty-five million, four hundred fifty-six thousand, two hundred eighty-three".