1453319681 has 16 divisors (see below), whose sum is σ = 1686702528. Its totient is φ = 1237555200.

The previous prime is 1453319657. The next prime is 1453319729. The reversal of 1453319681 is 1869133541.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1453319681 is a prime.

It is a super-2 number, since 2×1453319681² = 4224276190363883522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1453319381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21041 + ... + 57873.

It is an arithmetic number, because the mean of its divisors is an integer number (105418908).

Almost surely, 2^1453319681 is an apocalyptic number.

1453319681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1453319681 is a deficient number, since it is larger than the sum of its proper divisors (233382847).

1453319681 is a wasteful number, since it uses less digits than its factorization.

1453319681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37072.

The product of its digits is 77760, while the sum is 41.

The square root of 1453319681 is about 38122.4301560118. The cubic root of 1453319681 is about 1132.7143042668.

The spelling of 1453319681 in words is "one billion, four hundred fifty-three million, three hundred nineteen thousand, six hundred eighty-one".