1448664861 has 48 divisors (see below), whose sum is σ = 2373826560. Its totient is φ = 781371360.

The previous prime is 1448664851. The next prime is 1448664863. The reversal of 1448664861 is 1684668441.

It is not a de Polignac number, because 1448664861 - 2⁵ = 1448664829 is a prime.

It is a super-2 number, since 2×1448664861² = 4197259758992298642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1448664861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1448664863) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 923700 + ... + 925266.

It is an arithmetic number, because the mean of its divisors is an integer number (49454720).

Almost surely, 2^1448664861 is an apocalyptic number.

It is an amenable number.

1448664861 is a deficient number, since it is larger than the sum of its proper divisors (925161699).

1448664861 is a wasteful number, since it uses less digits than its factorization.

1448664861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934 (or 1927 counting only the distinct ones).

The product of its digits is 884736, while the sum is 48.

The square root of 1448664861 is about 38061.3302578877. The cubic root of 1448664861 is about 1131.5036918859.

The spelling of 1448664861 in words is "one billion, four hundred forty-eight million, six hundred sixty-four thousand, eight hundred sixty-one".