1662451453 has 8 divisors (see below), whose sum is σ = 1791143928. Its totient is φ = 1533874944.

The previous prime is 1662451387. The next prime is 1662451457. The reversal of 1662451453 is 3541542661.

It can be written as a sum of positive squares in 4 ways, for example, as 242518329 + 1419933124 = 15573^2 + 37682^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1662451453 - 2⁹ = 1662450941 is a prime.

It is a super-2 number, since 2×1662451453² = 5527489667163622418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662451457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2025 + ... + 57697.

It is an arithmetic number, because the mean of its divisors is an integer number (223892991).

Almost surely, 2^1662451453 is an apocalyptic number.

1662451453 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1662451453 is a deficient number, since it is larger than the sum of its proper divisors (128692475).

1662451453 is a wasteful number, since it uses less digits than its factorization.

1662451453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57983.

The product of its digits is 86400, while the sum is 37.

The square root of 1662451453 is about 40773.1707498939. The cubic root of 1662451453 is about 1184.6307199732.

The spelling of 1662451453 in words is "one billion, six hundred sixty-two million, four hundred fifty-one thousand, four hundred fifty-three".