1453640481 has 6 divisors (see below), whose sum is σ = 2099702930. Its totient is φ = 969093648.

The previous prime is 1453640473. The next prime is 1453640483. The reversal of 1453640481 is 1840463541.

1453640481 is a `hidden beast` number, since 1 + 4 + 5 + 3 + 640 + 4 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1089594081 + 364046400 = 33009^2 + 19080^2 .

It is not a de Polignac number, because 1453640481 - 2³ = 1453640473 is a prime.

It is a super-2 number, since 2×1453640481² = 4226141296003822722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1453640483) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80757796 + ... + 80757813.

Almost surely, 2^1453640481 is an apocalyptic number.

It is an amenable number.

1453640481 is a deficient number, since it is larger than the sum of its proper divisors (646062449).

1453640481 is a wasteful number, since it uses less digits than its factorization.

1453640481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161515615 (or 161515612 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 1453640481 is about 38126.6374205751. The cubic root of 1453640481 is about 1132.7976417505.

The spelling of 1453640481 in words is "one billion, four hundred fifty-three million, six hundred forty thousand, four hundred eighty-one".