1453351440 has 40 divisors (see below), whose sum is σ = 4505390208. Its totient is φ = 387560320.

The previous prime is 1453351423. The next prime is 1453351451. The reversal of 1453351440 is 441533541.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1453351440² = 4224460816300147200, 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 = 1453351398 and 1453351407.

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, 3027576 + ... + 3028055.

Almost surely, 2^1453351440 is an apocalyptic number.

1453351440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1453351440 is an abundant number, since it is smaller than the sum of its proper divisors (3052038768).

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

1453351440 is a wasteful number, since it uses less digits than its factorization.

1453351440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6055647 (or 6055641 counting only the distinct ones).

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

The square root of 1453351440 is about 38122.8466932888. The cubic root of 1453351440 is about 1132.7225551727.

Adding to 1453351440 its reverse (441533541), we get a palindrome (1894884981).

The spelling of 1453351440 in words is "one billion, four hundred fifty-three million, three hundred fifty-one thousand, four hundred forty".