1495121447 has 4 divisors (see below), whose sum is σ = 1495199280. Its totient is φ = 1495043616.

The previous prime is 1495121443. The next prime is 1495121449. The reversal of 1495121447 is 7441215941.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1495121447 - 2² = 1495121443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1495121447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1495121443) 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, 12863 + ... + 56175.

It is an arithmetic number, because the mean of its divisors is an integer number (373799820).

Almost surely, 2^1495121447 is an apocalyptic number.

1495121447 is a deficient number, since it is larger than the sum of its proper divisors (77833).

1495121447 is an equidigital number, since it uses as much as digits as its factorization.

1495121447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77832.

The product of its digits is 40320, while the sum is 38.

The square root of 1495121447 is about 38666.8003201713. The cubic root of 1495121447 is about 1143.4718837971.

The spelling of 1495121447 in words is "one billion, four hundred ninety-five million, one hundred twenty-one thousand, four hundred forty-seven".