1448163825381 has 48 divisors (see below), whose sum is σ = 2601054985984. Its totient is φ = 755991677952.

The previous prime is 1448163825373. The next prime is 1448163825401. The reversal of 1448163825381 is 1835283618441.

It is a happy number.

1448163825381 is a `hidden beast` number, since 1 + 4 + 48 + 1 + 63 + 8 + 2 + 538 + 1 = 666.

It is not a de Polignac number, because 1448163825381 - 2³ = 1448163825373 is a prime.

It is a super-2 number, since 2×1448163825381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1448163825181) 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, 9035041 + ... + 9193926.

Almost surely, 2^{1448163825381} is an apocalyptic number.

It is an amenable number.

1448163825381 is a deficient number, since it is larger than the sum of its proper divisors (1152891160603).

1448163825381 is a wasteful number, since it uses less digits than its factorization.

1448163825381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18229090 (or 18229087 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 54.

The spelling of 1448163825381 in words is "one trillion, four hundred forty-eight billion, one hundred sixty-three million, eight hundred twenty-five thousand, three hundred eighty-one".