1351246147 has 4 divisors (see below), whose sum is σ = 1382670520. Its totient is φ = 1319821776.

The previous prime is 1351246121. The next prime is 1351246157. The reversal of 1351246147 is 7416421531.

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-1351246147 is a prime.

It is a super-2 number, since 2×1351246147² = 3651732299564691218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1351246157) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 15712122 + ... + 15712207.

It is an arithmetic number, because the mean of its divisors is an integer number (345667630).

Almost surely, 2^1351246147 is an apocalyptic number.

1351246147 is a deficient number, since it is larger than the sum of its proper divisors (31424373).

1351246147 is an equidigital number, since it uses as much as digits as its factorization.

1351246147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31424372.

The product of its digits is 20160, while the sum is 34.

The square root of 1351246147 is about 36759.3001429570. The cubic root of 1351246147 is about 1105.5494075894.

Adding to 1351246147 its reverse (7416421531), we get a palindrome (8767667678).

The spelling of 1351246147 in words is "one billion, three hundred fifty-one million, two hundred forty-six thousand, one hundred forty-seven".