1453513440 has 48 divisors (see below), whose sum is σ = 4578568848. Its totient is φ = 387603456.

The previous prime is 1453513403. The next prime is 1453513459. The reversal of 1453513440 is 443153541.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1453513440² = 4225402640521267200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1453513398 and 1453513407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1513597 + ... + 1514556.

It is an arithmetic number, because the mean of its divisors is an integer number (95386851).

Almost surely, 2^1453513440 is an apocalyptic number.

1453513440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1453513440 is an abundant number, since it is smaller than the sum of its proper divisors (3125055408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1453513440 is a wasteful number, since it uses less digits than its factorization.

1453513440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3028171 (or 3028163 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 1453513440 is about 38124.9713442515. The cubic root of 1453513440 is about 1132.7646404824.

Adding to 1453513440 its reverse (443153541), we get a palindrome (1896666981).

The spelling of 1453513440 in words is "one billion, four hundred fifty-three million, five hundred thirteen thousand, four hundred forty".