1451897446 has 4 divisors (see below), whose sum is σ = 2177846172. Its totient is φ = 725948722.

The previous prime is 1451897443. The next prime is 1451897449. The reversal of 1451897446 is 6447981541.

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

It is an interprime number because it is at equal distance from previous prime (1451897443) and next prime (1451897449).

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1451897446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1451897443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362974360 + ... + 362974363.

It is an arithmetic number, because the mean of its divisors is an integer number (544461543).

Almost surely, 2^1451897446 is an apocalyptic number.

1451897446 is a deficient number, since it is larger than the sum of its proper divisors (725948726).

1451897446 is an equidigital number, since it uses as much as digits as its factorization.

1451897446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725948725.

The product of its digits is 967680, while the sum is 49.

The square root of 1451897446 is about 38103.7720704919. The cubic root of 1451897446 is about 1132.3446880140.

The spelling of 1451897446 in words is "one billion, four hundred fifty-one million, eight hundred ninety-seven thousand, four hundred forty-six".